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4 Incredible Ways Your Body Changes When Intermittent Fasting

Learn how this popular diet trend can transform your health.

FACT CHECKED BY Alek Korab
Dieting woman pointing on a clock wit salad on her side.
Shutterstock/Photoroyalty
FACT CHECKED BY Alek Korab

Time-restricted eating (TRE), including intermittent fasting (IF), is a popular approach to achieving health-related goals, including weight loss. Here, we’ll take a look at what happens during fasting and why IF is thought to be helpful for improving health. My name is Annette Snyder, and I’ve been a registered dietitian (RD) for nearly 20 years. I’ve had extensive experience in the practice areas of weight management, diabetes care, and digestive disorders, especially via my work with Top Nutrition Coaching. I currently maintain additional board certification (CSOWM) in weight management through the Commission on Dietetic Registration, the credentialing body for the Academy of Nutrition and Dietetics. I’m passionate about the new things nutrition science is teaching us. My goal is to share that knowledge in a way that inspires others to get curious about their health.


1. What is Time-Restricted Eating (TRE) or Intermittent Fasting (IF)?

Intermittent,Fasting,Hungry,dietShutterstock

TRE can take different forms; IF is the most popular at present. While I’ve heard it described as “a fancy way to keep skipping breakfast,” there is more to it than that. Typically, when we talk about eating patterns, we look at the what and often why of how people nourish themselves the way they do. TRE focuses primarily on when. Essentially, there is a specific window of time for eating, and the remainder is fasting, with only water or plain tea or coffee consumed. The goal is to get the body from burning the calories you eat from food to storing fat for fuel during the fasting period.

Related: I Lost 80 Pounds Eating What I Love & Here Are My Simple Tricks

2. What Happens to Your Body During a Fast

,Woman,Weight,Machine,To,Balance,Weigh,scales,weigh, loss, diet,thinking, puzzledShutterstock

So what is going on during a fast? The body’s circadian rhythm has a lot to do with why fasting might benefit health. Circadian rhythms (*1) are the ‘physical, mental, and behavioral changes an organism experiences over a 24-hour cycle.’ Light and dark have the biggest influence, though they are not the only factors. We have learned (*2) that food-processing organs like your liver or pancreas follow the circadian rhythm. During the daytime, the pancreas makes and releases insulin, which in turn tells the liver to take sugar from the blood and put it into storage as well as guide sugar into the cells where energy is made (bringing the raw materials to the factory, so to speak).

During times of fasting and to promote more emergency sugar storage, the pancreas releases more of the hormone glucagon3. Toward the end of the day and during the night, the pancreas slows down insulin production. In the last few hours of the day, toward bedtime, melatonin (made in the pineal gland in the brain) also kicks in and slows the making of insulin, slowing down gut motility. Stomach emptying and digestion-related blood flow are better during the daytime and less toward and during the night (*3).

With the brain needing to rest and do its daily repairs and clean up, the body follows suit. While we sleep, our body is busy breaking down cholesterol and repairing or removing damaged cell mitochondria. When we eat during normal sleeping hours, these processes have to stop so food can be broken down, and fat stores are built up. Even if your calorie count looks perfect, if you eat during this time, you may see problems (like weight gain) occur. Your body just isn’t set up for those 2 AM tacos!

3. You Run on Stored Fuel

Blood,Drawn,From,A,Patient,With,Serum,doctor,hospitalShutterstock

During a fast, we run on stored fuel. At first, we get the fuel from stored sugar in the liver and muscles (glycogen). When that supply runs out, typically within 12-24 hours (*4), we start making fuel from ketones in our mitochondria. Ketones come from breaking down body fat. This fuel switchover and the higher level of ketones in the blood have been pinpointed as the reason for some of the health benefits. We also start to make sugar from proteins during this time. Protein stores can come from muscle. The dependence on this process gradually stops (*4) as the body gets better at using ketones. (There is a risk of losing muscle mass if you’re not paying attention to your nutrition.)

Related: 3 Simple Weight Loss Tips You'll Wish You Knew Sooner

4. You May Have Increased Focus

Magnetic,Resonance,Image,(mri),Of,The,Brain,doctor,hospital,surgeonShutterstock

Some scientists suggest that higher ketone levels help brain function (*5). Levels of the neurotransmitter GABA (which has a calming effect) go up, and levels of glutamate (which has an exciting effect) go down. This is thought to enhance focus. Studies have also found increased brain levels of BDNF (brain-derived neurotrophic factor), which has a huge role in keeping neurons (nerve cells) healthy and firing (*6). BDNF can increase the number of mitochondria (energy-producing factories) in the body’s cells. Fasting is considered a mild stressor, and the neurons adjust and respond by increasing their mitochondria. When the nerve cells make more fuel, it powers and helps create more synapses (the space between neurons where ‘messages’ from neurotransmitters travel). Synapses could be compared to a highway, and adding more highways results in better transmission of messages (the vehicles on the highways).

5. Final Word From the Expert

Intermittent,Fasting,,Clock,,,Up,Diet,meal,time,dinner,foodShutterstock

As you can see, your body is pretty cool. It adapts. Learning to work with it and its natural rhythms instead of against it may be the best thing you can do for your health. Stay curious, friends!

Cited References

  1. National Institutes of Health (NIH) (n.d.). Circadian rhythms. National Institute of General Medical Sciences. Retrieved January 14, 2024, from https://www.nigms.nih.gov/education/fact-sheets/Pages/circadian-rhythms.aspx
  2. Arble DM, Bass J, Laposky AD, Vitaterna MH, Turek FW. Circadian timing of food intake contributes to weight gain. Obesity (Silver Spring). 2009;17(11):2100-2102. doi:10.1038/oby.2009.264
  3. Patterson RE, Sears DD. Metabolic Effects of Intermittent Fasting. Ann Rev Nutr. 2017;37(1):371-393. doi: 10.1146/annurev-nutr-071816-064634.
  4. Sanvictores T, Casale J, Huecker MR. Physiology, Fasting. [Updated 2023 Jul 24]. In: StatPearls [Internet]. Treasure Island (FL): StatPearls Publishing; 2023 Jan-. Available from: https://www.ncbi.nlm.nih.gov/books/NBK534877/
  5. Poff AM, Rho JM, D'Agostino DP. Ketone Administration for Seizure Disorders: History and Rationale for Ketone Esters and Metabolic Alternatives. Front Neurosci. 2019;13:1041. Published 2019 Oct 15. doi:10.3389/fnins.2019.01041
  6. Markham A, Bains R, Franklin P, Spedding M. Changes in mitochondrial function are pivotal in neurodegenerative and psychiatric disorders: how important is BDNF?. Br J Pharmacol. 2014;171(8):2206-2229. doi:10.1111/bph.12531

More For You

Dieting woman pointing on a clock wit salad on her side.
Shutterstock/Photoroyalty
FACT CHECKED BY Alek Korab
Expert-Recommended

We've consulted with our team of licensed nutritionists and dietitians to bring you informed recommendations for food products, health aids and nutritional goods to safely and successfully guide you toward making better diet and nutrition choices. We strive to only recommend products that adhere to our philosophy of eating better while still enjoying what you eat.

Time-restricted eating (TRE), including intermittent fasting (IF), is a popular approach to achieving health-related goals, including weight loss. Here, we’ll take a look at what happens during fasting and why IF is thought to be helpful for improving health. My name is Annette Snyder, and I’ve been a registered dietitian (RD) for nearly 20 years. I’ve had extensive experience in the practice areas of weight management, diabetes care, and digestive disorders, especially via my work with Top Nutrition Coaching. I currently maintain additional board certification (CSOWM) in weight management through the Commission on Dietetic Registration, the credentialing body for the Academy of Nutrition and Dietetics. I’m passionate about the new things nutrition science is teaching us. My goal is to share that knowledge in a way that inspires others to get curious about their health.


1. What is Time-Restricted Eating (TRE) or Intermittent Fasting (IF)?

Intermittent,Fasting,Hungry,dietShutterstock

TRE can take different forms; IF is the most popular at present. While I’ve heard it described as “a fancy way to keep skipping breakfast,” there is more to it than that. Typically, when we talk about eating patterns, we look at the what and often why of how people nourish themselves the way they do. TRE focuses primarily on when. Essentially, there is a specific window of time for eating, and the remainder is fasting, with only water or plain tea or coffee consumed. The goal is to get the body from burning the calories you eat from food to storing fat for fuel during the fasting period.

Related: I Lost 80 Pounds Eating What I Love & Here Are My Simple Tricks

2. What Happens to Your Body During a Fast

,Woman,Weight,Machine,To,Balance,Weigh,scales,weigh, loss, diet,thinking, puzzledShutterstock

So what is going on during a fast? The body’s circadian rhythm has a lot to do with why fasting might benefit health. Circadian rhythms (*1) are the ‘physical, mental, and behavioral changes an organism experiences over a 24-hour cycle.’ Light and dark have the biggest influence, though they are not the only factors. We have learned (*2) that food-processing organs like your liver or pancreas follow the circadian rhythm. During the daytime, the pancreas makes and releases insulin, which in turn tells the liver to take sugar from the blood and put it into storage as well as guide sugar into the cells where energy is made (bringing the raw materials to the factory, so to speak).

During times of fasting and to promote more emergency sugar storage, the pancreas releases more of the hormone glucagon3. Toward the end of the day and during the night, the pancreas slows down insulin production. In the last few hours of the day, toward bedtime, melatonin (made in the pineal gland in the brain) also kicks in and slows the making of insulin, slowing down gut motility. Stomach emptying and digestion-related blood flow are better during the daytime and less toward and during the night (*3).

With the brain needing to rest and do its daily repairs and clean up, the body follows suit. While we sleep, our body is busy breaking down cholesterol and repairing or removing damaged cell mitochondria. When we eat during normal sleeping hours, these processes have to stop so food can be broken down, and fat stores are built up. Even if your calorie count looks perfect, if you eat during this time, you may see problems (like weight gain) occur. Your body just isn’t set up for those 2 AM tacos!

3. You Run on Stored Fuel

Blood,Drawn,From,A,Patient,With,Serum,doctor,hospitalShutterstock

During a fast, we run on stored fuel. At first, we get the fuel from stored sugar in the liver and muscles (glycogen). When that supply runs out, typically within 12-24 hours (*4), we start making fuel from ketones in our mitochondria. Ketones come from breaking down body fat. This fuel switchover and the higher level of ketones in the blood have been pinpointed as the reason for some of the health benefits. We also start to make sugar from proteins during this time. Protein stores can come from muscle. The dependence on this process gradually stops (*4) as the body gets better at using ketones. (There is a risk of losing muscle mass if you’re not paying attention to your nutrition.)

Related: 3 Simple Weight Loss Tips You'll Wish You Knew Sooner

4. You May Have Increased Focus

Magnetic,Resonance,Image,(mri),Of,The,Brain,doctor,hospital,surgeonShutterstock

Some scientists suggest that higher ketone levels help brain function (*5). Levels of the neurotransmitter GABA (which has a calming effect) go up, and levels of glutamate (which has an exciting effect) go down. This is thought to enhance focus. Studies have also found increased brain levels of BDNF (brain-derived neurotrophic factor), which has a huge role in keeping neurons (nerve cells) healthy and firing (*6). BDNF can increase the number of mitochondria (energy-producing factories) in the body’s cells. Fasting is considered a mild stressor, and the neurons adjust and respond by increasing their mitochondria. When the nerve cells make more fuel, it powers and helps create more synapses (the space between neurons where ‘messages’ from neurotransmitters travel). Synapses could be compared to a highway, and adding more highways results in better transmission of messages (the vehicles on the highways).

5. Final Word From the Expert

Intermittent,Fasting,,Clock,,,Up,Diet,meal,time,dinner,foodShutterstock

As you can see, your body is pretty cool. It adapts. Learning to work with it and its natural rhythms instead of against it may be the best thing you can do for your health. Stay curious, friends!

Cited References

  1. National Institutes of Health (NIH) (n.d.). Circadian rhythms. National Institute of General Medical Sciences. Retrieved January 14, 2024, from https://www.nigms.nih.gov/education/fact-sheets/Pages/circadian-rhythms.aspx
  2. Arble DM, Bass J, Laposky AD, Vitaterna MH, Turek FW. Circadian timing of food intake contributes to weight gain. Obesity (Silver Spring). 2009;17(11):2100-2102. doi:10.1038/oby.2009.264
  3. Patterson RE, Sears DD. Metabolic Effects of Intermittent Fasting. Ann Rev Nutr. 2017;37(1):371-393. doi: 10.1146/annurev-nutr-071816-064634.
  4. Sanvictores T, Casale J, Huecker MR. Physiology, Fasting. [Updated 2023 Jul 24]. In: StatPearls [Internet]. Treasure Island (FL): StatPearls Publishing; 2023 Jan-. Available from: https://www.ncbi.nlm.nih.gov/books/NBK534877/
  5. Poff AM, Rho JM, D'Agostino DP. Ketone Administration for Seizure Disorders: History and Rationale for Ketone Esters and Metabolic Alternatives. Front Neurosci. 2019;13:1041. Published 2019 Oct 15. doi:10.3389/fnins.2019.01041
  6. Markham A, Bains R, Franklin P, Spedding M. Changes in mitochondrial function are pivotal in neurodegenerative and psychiatric disorders: how important is BDNF?. Br J Pharmacol. 2014;171(8):2206-2229. doi:10.1111/bph.12531
Young slim woman enjoying successful weight loss, showing great result wearing old large jeans for comparison, smiling to camera.
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FACT CHECKED BY Christopher Roback
Expert-Recommended

We've consulted with our team of licensed nutritionists and dietitians to bring you informed recommendations for food products, health aids and nutritional goods to safely and successfully guide you toward making better diet and nutrition choices. We strive to only recommend products that adhere to our philosophy of eating better while still enjoying what you eat.

Are you considering going fast? Before you hop on the trending diet method, it’s crucial that you do a little research on the various types. Dr. Jason Fung is a specialist physician, nephrologist, and New York Times best-selling author of The Obesity Code, The Complete Guide to Fasting, The Diabetes Code, and The Cancer Code. In a viral YouTube video, he discusses “the different types of fasts that you can do because there's a lot of different variations that you can try then still get good results, and it's coming right up.”


Fasting Is a Period of Time You’re Not Eating

20:4 fasting diet concept. One third plate with healthy food and two third plate is empty. Beef, salmon, egg, broccoli, tomato, nuts, carrots, mushrooms. Dark background. Top view.Shutterstock

“A fasting period is defined as any period of time that you're not eating. So, in the classic definition, you're really only allowed water. And if you take anything else by definition, that is breaking your fast,” he says.

There Are Various Reasons You Might Want to Fast

The man who measures a waist with a tape measureShutterstock

There can be lots of different reasons you might want to fast, he continues. “You can try do it to lose weight, you can do it for controlling your blood sugars. There's lots of different reasons why you might fast, and in those circumstances, you can allow certain things into your fast that are going to make it easy.”

Different Methods Might Make It Easier to Sustain a Fast

Why should you consider trying a different fasting method? There are “different variations of fasting that you can try that might make it easier to sustain the fast and therefore get good results in terms of what you're aiming for,” he says.

1. The Classic Fast

Glasses,Of,Water,On,A,Wooden,Table.,Selective,Focus.,ShallowShutterstock

“The classic fast only allows water with nothing else, and there are lots of ways that you can still add some flavor to the water and still make it taste good,” he says. “So you can try lemon or lime, for example. You can squeeze lemon in and drop it in. There are lots of flavorful oils in the skin or the rind that can make it taste good. You can infuse herbs into it. So mint is very popular, and cucumber is very good. Then, you can infuse fruit flavors. So if you use something like strawberries, for example, you can cut them up, put them in water, let them steep overnight, and you'll get the flavor of the strawberry with very little calories.”

You Can Add Apple Cider Vinegar

Apple cider vinegar and lemons. Copy space.Shutterstock

Apple cider vinegar is another thing you can add to water, “and while it's still just water only, it has a little bit of that tanginess,” he says. “Some people find it's very helpful in terms of suppressing hunger.”

2. Dry Fasting

Intermittent,Fasting,Plate,diet,meal,clock,foodShutterstock

Number two is dry fasting, says Dr. Fung. “This is used classically in certain types of religious fasting, and dry fasting does not even allow water. So, the amount of time you can do it is limited. Certainly, anything over 24 hours is not recommended, and many people get thirsty long before that.”

While Dry Fasting and Metabolizing Fat, Water Will Be Released

“Taking something to drink often makes it easier to fast. So, some people find dry fasting a little harder, but surprisingly, some people find it easier, and there's a reason for that,” he continues. “When fat is being metabolized, it actually breaks down, and water is released. This is one of the reasons why bears, for example, will hibernate all winter and they're not drinking any water, so you might wonder how they're getting their, uh, water, why they're not getting dehydrated. And it's because the metabolism of the fat will actually release a little bit of water during fasting.”

This Makes People Urinate a Lot

Door handle open to toilet can see toiletShutterstock

“What can sometimes happen is people may find that they're urinating a lot,” he continues. “As you fast, the insulin levels go down, and insulin tends to hold water within our bodies. So when we fast, that insulin level allows that water to come out. So some people get a lot of urine, and some people even get diarrhea, and they find it very bothersome. And in this situation that's where dry fasting for a short period of time might be very useful to make it easier for you.”

Some People Find Their Hunger Levels Drop During a Dry Fast

“The other interesting thing is some people find that their hunger is much less when they do a dry compared to a water only or a flavored water fast,” says Dr. Fung. “And if it works for you, there's no reason not to do it. But again, I stress that anything longer than 24 hours is not recommended because you do get dehydrated very quickly.”

RELATED: This Plan Is How to Lose 5 Percent Body Fat In 2 Weeks

3. Tea Fast

Japanese green teaShutterstock

Number three is a tea fast. “So in addition to allowing flavored waters and waters, you also allow herbal teas and also teas with no other cream or sweeteners. So no artificial sweeteners, no artificial flavors, but green teas, black teas, oolong teas,” says Fung. “There are also other variations like herbal teas, which are not real teas because they don't have the tea leaf. They're herbs. So mint teas, chamomile teas, and cinnamon, for example, are all very good. There are other varieties that you can get now, like mushroom teas, which some people find very useful because they don't have any calories and have no effect on insulin.”

These Can Be Helpful for Weight Loss

Weight,Scale,scales,loss,diet,health,feetShutterstock

“As you fast, your body is going to metabolize the glucose in your body, so your blood glucose often gets better, and then you're going to metabolize fat. So you will find that you can lose weight, and the tea or the herbal tea may make it a lot easier,” he says.

4. Coffee Fast

cup of fresh fatty coffee with butter and coconut oil - ketogenic diet conceptShutterstock

“The fourth variant you can try is allowing coffee. So black coffee is good, and it contains a lot more caffeine than tea,” he says. “So some people find it very useful. Also, a lot of people are very addicted to or used to having coffee in their system, so they find it very useful to maintain that normal rhythm when they're eating or when they're fasting. So coffee and a little bit of cream is okay; both teas and coffees, when it's hot, are great as iced variations as well.”

RELATED: The Ultimate Guide to Getting Fit as a Pear Body Type

5. Bone Broth Fast

Saucepan with bouillon with a ladle on rustic wooden table. Bone brothShutterstock

The fifth type of variation is bone broth. “Bone broth is clearly a type of food in that it has proteins, but it often has fats and some calories. However, the amount is very small. So while it's not a true fast, you can use it to help suppress hunger,” he says.

Because It Has Fats and Calories, You Might Be Able to Fast Longer

Bone,Broth,Chicken,diet,foodShutterstock

Because of the fat and calories, “you can use it to go longer periods of time,” says Dr. Fung. “And by doing that, you can sometimes get excellent results in terms of blood sugars and weight loss. We recommend homemade broths using bone. If you don't want to use bones, you can use vegetable broths, but try to avoid canned broths that tend to have a lot of processing, bouillon cubes, MSG, and that kind of thing. It's better to make your own and use the bones, vegetables, and herbs. Some people also add some vinegar into the mix.”

6. Fat Fasting

Fried bacon slices, closeupShutterstock

“The sixth type of fasting is fat fasting, and we talk about this a lot where we use high-fat foods,” says Dr. Fung. “Well, again, not a true fast does allow some people to do very well in terms of their weight loss.”

The Fat Suppresses Hunger

cup of fresh fatty coffee with butter and coconut oil - ketogenic diet conceptShutterstock

“The fat really helps suppress the hunger, and because it's also very satiating and you can sometimes still lose a lot of weight on these high-fat diets, it is sometimes very useful,” Fung continues. “Bulletproof coffee is a type of fat fasting because you have the coffee and then usually a large amount of oil or butter or MCT oil. Therefore, it really classifies it as food. There's a significant number of calories there, and that can sometimes be very good. We have heard lots of people say they've done great on that.”

RELATED:12-3-30 Walking Method: 20 Proven Tips to Lose Weight Faster

7. 5-2 Fasting

Intermittent fasting, health care asian young woman dietary, having stomach ache, temptation hungry of breakfast food in morning on table at home, looking at watch on her wrist but not yet time to eatShutterstock

The seventh type of fasting is the five to two fasting, popularized by Dr. Mosley in the UK “and it has five normal days of eating and two days of fasting, which is not a true fast, but he allows 500 calories during that day of fasting,” he says. “So clearly, it's not limited by time, but on those two days, it's an ultra low-calorie day. And again, that is sometimes a great strategy for some people to use with a lot of success.”

8. Fiber Fast

Chia,Seeds.,Chia,Word,Made,From,Chia,Seeds.,Selective,FocusShutterstop

“The eighth type of fast is what can be sometimes called a fiber-fast, where you're just allowing very, very high fiber foods such as chia seeds, for example. So chia seeds, you can put them in some liquid, and they will bloom up form, form sort of a gel, and you can put a little bit of flavoring in that, and when you eat it, it makes you full, but there's a lot of fiber in there,” he says. “So it sort of takes up a lot of space and keeps you full. And if it allows you to do more of the regular fasting, then sometimes the net benefit is there.”

There Are Other Variations

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According to Fung, there are “lots more other ways to vary” fasting, “including the amount of time you're fasting, but these are ways you can change what is allowed during the fast. And by doing that, you might find that one strategy really works for you. And if it works, great, go ahead and use it. If not, you can change and try different other things.”

RELATED: Benchmark Your Progress with Our Lean Body Mass Calculator

The Key Is Finding Which Is Right for You

“The key is to see what works for yourself because we're all different. So give them all a try, and I hope you'll have the best of luck,” he concludes. And if you enjoyed this article, take advantage of these 15 Quick Ways to Lose Body Fat Percentage in a Week.

If,(intermittent,Fasting),16,And,8,Diet,Rule,And,Weight
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FACT CHECKED BY Christopher Roback
Fact-Checked

Our content is fact checked by our senior editorial staff to reflect accuracy and ensure our readers get sound information and advice to make the smartest, healthiest choices.

We adhere to structured guidelines for sourcing information and linking to other resources, including scientific studies and medical journals.

If you have any concerns about the accuracy of our content, please reach out to our editors by e-mailing editors@bodynetwork.com.

Are you considering trying intermittent fasting to lose weight? Doctor James O'Donovan, MBBS, specializes in aging and regularly shares videos on promoting longevity. In one of his viral videos, he discusses a popular weight loss method, 16:8 intermittent fasting, going over everything you need to know about the trending eating style.


What Is Intermittent Fasting?

“Intermittent fasting is when you alternate between periods of eating and fasting. This type of eating is often described as ‘patterns’ or ‘cycles’ of fasting,” he writes in the caption of the clip. “Intermittent fasting isn't about starving yourself — it's about cutting way back on calories for short time periods. The belief is that your body becomes satisfied with smaller portions while also reducing cravings for unhealthy snack foods. That is, as long as you maintain a healthy diet while trying it all out.”

16:8 Fast for 16 Hours and Feast for 8

Intermittent fasting, health care asian young woman dietary, having stomach ache, temptation hungry of breakfast food in morning on table at home, looking at watch on her wrist but not yet time to eatShutterstock

16:8 Intermittent fasting is “a popular type of intermittent fasting that involves fasting for 16 hours and an 8-hour eating window,” he writes. He goes on to explain what it is, “what time windows you might want to choose for your fast, food groups to consider, and benefits and drawbacks of intermittent fasting.”

It’s Not About What You Eat, But When You Eat

Young Caucasian suntanned beautiful elegant woman eating, biting Italian thick tomato pizza with burata cheese Yummy unhealthy food. Liking fingersShutterstock

“Many diets focus on what to eat, but intermittent fasting is all about when you eat. With intermittent fasting, you only eat during a specific time. Research shows fasting for a certain number of hours each day or eating just one meal a couple days a week may have health benefits - for example, for losing weight and for better control of diabetes,” he says.

More Details About Intermittent Fasting

MALE HANDS HOLDING KNIFE AND FORK AND A CLOCK AS A FOOD PLATE ON YELLOW BACKGROUND. INTERMITTENT FASTING, KETOGENIC DIET, WEIGHT LOSS AND SLIMMING DIETS CONCEPT. HEALTHY LIFESTYLE. TOP VIEW.Shutterstock

“Intermittent fasting involves limiting your daily food intake to a certain window of time. Now, one of the most popular types of intermittent fasting is a diet that's called the 16 eight intermittent fasting diet,” he continues. “Essentially, this involves limiting your intake of food and drinks, which contain calories, to a set window of eight hours a day. Now, for the remaining 16 hours, you abstain from food and drink. However, you are still allowed to drink water and other non-calorie beverages, such as plain coffee or tea. Importantly, you can repeat this cycle as frequently as you like, from just once or twice a week to every day, and it will all depend on your personal preference as well as what fits in with your lifestyle.”

It’s Easy to Follow and Is Less Restrictive Than Other Diets

Waist-up photo of slim young woman smiling while cutting cucumber on wooden boardShutterstock

“While other diets often set out strict draws, 16 eight, intermittent fasting is easy to follow, and it might provide measurable results with minimal disruption to your diet,” he notes. “It's generally considered less restrictive and more flexible than many other diets, and it works well with most lifestyles.”

RELATED: I’m 70 but Look 40 Thanks to These 7 At-Home Exercises

Choose a Time Window That Works for You

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It’s key to choose a time window that works for you. “You should begin by picking an eight-hour window and limiting your food intake to that time span. Now, this is obviously going to depend on your lifestyle, but some popular eight-hour time windows to eat are from 7:00 AM to 3:00 PM, 9:00 AM to 5:00 PM, 12:00 PM to 8:00 PM, as well as 2:00 PM to 10:00 PM,” he says. “Basically, what I'm trying to convey by this is that there is no one fixed way to do things. The best thing to do is that when you're starting out, try to experiment and pick the timeframe that best fits your schedule.” He also recommends setting a timer for the start and stop times of your feast period.

Eat Nutritious Whole Foods

Beautiful woman harvesting apples, eating themShutterstock

“Now we've discussed the time window. Let's just discuss some of the food and meal plans now to maximize the potential health benefits of any diet,” he continues. “It's important to stick to nutritious whole foods and beverages during your eating period. Filling up on nutrient-rich foods will basically help you round out your diet and support a healthy weight. Trying to balance each meal with a variety of whole foods can include things like fruits, such as apples, bananas, berries, oranges, pears, or tomatoes, and vegetables, so things like broccoli, brussels sprouts, cauliflower, cucumbers, and leafy greens. Things like spinach and kale, as well as whole grains, are really important.”

He also recommends barley, buckwheat, quinoa, rice, and oats, healthy fats like olive oil and avocados, and protein sources, including eggs, fish, meat, poultry, nuts, and seeds.

And Stick to Zero Calorie Drinks

Water dispenser from dispenser of home fridge, Woman is filling a glass with water from the refrigerator.Shutterstock

He also tackles the topic of beverages. “In terms of drinking, I would just encourage you to drink water and avoid any calorie beverages,” he says. “These are things like pops and sodas. I would just stay very clear of those.”

Avoid Ultra Processed Foods

Hungry overweight woman holding hamburger on wooden plate, Fried chicken and Pizza on table .Concept of binge eating disorder (BED).Shutterstock

“It's important also to avoid ultra-processed foods, things like packaged snacks, deep fried items, sugary drinks, and most frozen meals,” he continues. “These foods are often full of bad sugars and preservatives, which are going to spike your blood sugars quickly, and they're going to make you feel more hungry. And ultra-processed foods have actually been linked with a whole host of negative health outcomes, so things like type two diabetes, high blood pressure, certain cancers, and even dementia.”

RELATED: I Lost 90 Pounds in 3 Years Without Giving Up My Favorite Foods

Here Are the Potential Benefits

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He goes on to discuss the potential benefits of this diet. “The first potential benefit of restricting your eating window to a few hours a day is that you can cut your calorie intake over the course of the day, which may, in turn, contribute to weight loss. For example, one review of the scientific literature on intermittent fasting found that it's in 11 of the 13 studies on intermittent fasting. It was reported there was statistically significant weight loss in participants,” he says. Another benefit? Improving blood sugar.

“Intermittent fasting has been shown to reduce fasting insulin and blood sugar levels, potentially decreasing your risk of diabetes. Now, if you've got type two diabetes, intermittent fasting might be an effective intervention, but you should speak to your own doctor before embarking on this diet to see if it will work for you.”

Here Are the Potential Drawbacks

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He also discusses potential drawbacks. “The first thing to state is that it's important that if you decide to embark on this type of fasting, that you do it gradually and you consider stopping or consulting your doctor if you've got any concerns or you experience any negative symptoms,” he says. “One of the other downsides is the potential for overeating as well as potential weight gain. That's because restricting your intake to just eight hours a day may cause some people to eat more than usual during the eating periods in an attempt to make up for the hours spent fasting. Now, this may lead to weight gain, digestive problems, and unhealthy eating habits.”

He adds that some people experience short-term physical symptoms. “These include things like hunger, weakness, and fatigue, although these often subside once you get into a routine,” he says.

Fasting Doesn’t Necessarily Lead to Weight Loss

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“Now, interestingly, current research doesn't suggest that intermittent fasting leads to any more weight loss than typical diets that recommend overall calorie restriction. Both eating patterns may lead to moderate weight loss. Now, suppose weight loss is your primary goal. In that case, you might prefer to lower your calorie intake instead of fasting intermittently to prevent the overeating that can occur when restricting intake to certain time windows,” he says.

RELATED: I Wore a 25-Pound Vest for a Year and These 7 Things Happened

Here Are His Top Tips

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He goes on to reveal his top intermittent fasting tips. “If you do want to start this, you should start with just one to two days a week and see if it works for you,” he says. “You should try different timings to see which fits your lifestyle. If you've got a long-term health condition, you should first consult your doctors to discuss whether or not this is the right type of dieting for you. This is important if you're taking any medications if you've got diabetes, low blood pressure, or a history of disordered eating. It's also important not to view 16-8 intermittent fasting as a substitute for eating a balanced diet rich in whole foods. And similarly, intermittent fasting is discouraged if you're trying to conceive your pregnant or your breastfeeding.” And if you enjoyed this article, take advantage of these 15 Quick Ways to Lose Body Fat Percentage in a Week.

FACT CHECKED BY Christopher Roback
Fact-Checked

Our content is fact checked by our senior editorial staff to reflect accuracy and ensure our readers get sound information and advice to make the smartest, healthiest choices.

We adhere to structured guidelines for sourcing information and linking to other resources, including scientific studies and medical journals.

If you have any concerns about the accuracy of our content, please reach out to our editors by e-mailing editors@bodynetwork.com.

Can you actually lose 25 pounds in a month? According to one weight loss influencer, the answer is yes. Rosa Charice (@rosacharice) has amassed nearly 400,000 followers on TikTok by sharing about her massive and rapid weight loss. In one video she reveals a significant secret to dropping tons of weight fast. “If you are trying to lose weight simply with a calorie deficit alone, and it isn't working for you, then you should try this instead. I was able to lose 25 pounds in just 30 days,” she says. Here is everything you need to know about how she did it.


Intermittent Fasting Helped Her Lose Weight

@rosacharice

It took me only 4 months to lose 100 pounds… and then I lost even MORE weight with intermittent fasting ❗️❤#loseweight #blacktiktok

Rosa reveals that restricting her eating hours was instrumental in her weight loss journey. “I was able to lose weight so fast by intermittent fasting and not even restricting myself,” she says in the clip. “I didn't even have to do much tracking after that.”

She Used an Intermittent Fasting App

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She added that she used a fitness app to help her lose weight. “One of my favorite apps at the moment to use for weight loss or weight management is called Label. I have previously recommended this app to help you count calories, but they also recently just added a fasting feature,” she says, explaining that they offer one-on-one coaching through your intermittent fasting journey, “so you feel like you have companionship and guided support,” she says. “They also give you specific recipes you can pair with intermittent fasting, so you don't have to count calories. And they also give you a basic to-do list or even instructions to help make intermittent fasting easier for weight loss.”

Related: This is the Minimal Daily Step Goal According to Science

She Says There Are Lots of Benefits of Intermittent Fasting

@rosacharice

Visit TikTok to discover videos!

In another video, Rosa explains the benefits of intermittent fasting. “I understand how fasting could be a turnoff because it's like, well, I don't want to stop eating. I don't want to stop,” she says, listing the benefits she experienced as a result.

Improved Looks

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First, she says intermittent fasting will improve your overall looks. “You're going to look better,” she says.

Improved Mood

Rosa_Charice_rosacharice1Rosa Charice/Facebook

She adds that it will also boost your mental health. “You're going to feel better,” she says.

Increased Energy

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Intermittent fasting also impacts your energy. “You're going to have more energy,” she notes.

Improved Sleep

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And, it could even help you get more rest, she claims. “You're going to have more sleep,” she promises.

Reduced Inflammation

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“The inflammation in your body will go down,” she adds.

Weight Loss

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And, last but not least, “You'll lose weight,” she says. “Who wouldn't want that?”

Related: The 11 Supplements Everyone Should Prioritize, According to a Nutrition Expert

Does Intermittent Fasting Work?

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Intermittent fasting " prolongs the period when your body has burned through the calories consumed during your last meal and begins burning fat,” explains Johns Hopkins Medicine. However, according to Chris McMahon, a nutrition and fitness coach, “there's nothing magical” about fasting because weight loss boils down to calories in versus out. However, “if you're someone with a hectic schedule or you're just not hungry in the morning and you don't tend to get hungry until 10 or 11,” there isn’t anything wrong with fasting. Still, it won’t “suddenly transform your body or reset your aging clock or your biological clock,” he says. “All you're doing is just cutting some of your calories out.”

💪🔥Body Booster:Try intermittent fasting if it fits your schedule. Remember, weight loss depends on a calorie deficit, not fasting alone.

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FACT CHECKED BY Christopher Roback
Fact-Checked

Our content is fact checked by our senior editorial staff to reflect accuracy and ensure our readers get sound information and advice to make the smartest, healthiest choices.

We adhere to structured guidelines for sourcing information and linking to other resources, including scientific studies and medical journals.

If you have any concerns about the accuracy of our content, please reach out to our editors by e-mailing editors@bodynetwork.com.

Losing 20 pounds in 60 days can be achieved, depending on your starting weight—and intermittent fasting could be a very useful tool to help make that happen. “Fasting changes where your body gets its energy. Typically, your energy comes from sugar. If you eat constantly while awake and don’t exercise, your body simply runs on the calories you consume,” says UCLA Health. “If you don’t use all the sugar you take in during the day, your body stores it as fat. When you go hours without eating, your body eventually runs out of stored sugar to use. Instead, it begins to burn fat to produce energy.” Here’s how intermittent fasting can help with weight loss and overall health.


1. Pick a Fasting Window

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Your fasting window is how long you fast for, and your eating window is the time allotted for meals. “There are lots of options to choose from,” Mary Hyer, RD, LDN, CCRP, tells Mass General Brigham. “But in the scientific world, you have to go at least 12 hours for it to be considered a fast. You still have to make sure you’re picking healthy foods. But intermittent fasting is one tool that can kickstart a healthy lifestyle change.”

2. Ease Into It

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You might find it easier to ease into fasting by changing some other behaviors first. “If fasting sounds scary, try to avoid snacking between meals and especially late-night snacking,” Hyer says. “That can be an easy way to give yourself time for your blood sugar to recover between meals.”

3. What Can I Drink?

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Try not to take in any calories during your fasting period. “While there are no hard-and-fast rules regarding what you can consume during your unrestricted eating periods, experts agree that maintaining a healthy, well-rounded diet produces the best results,” says UCLA Health. “During fasting times, limit yourself to water and zero-calorie drinks.”

4. Eating Less

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The shorter your eating window, the less you are likely to eat. “If you maintain your regular diet and then limit the time window during which you eat, it is likely that you will eat a few hundred fewer calories per day,” Richard Joseph, MD, tells Harvard Health. “If this is sustainable as a lifestyle, it could add up to modest weight loss (3% to 8% on average, based on current data) that can produce beneficial improvements in cardiometabolic markers such as blood pressure, LDL cholesterol and triglyceride levels, and average blood sugar.”

5. Stay Active

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You can lose lean muscle as well as fat with intermittent fasting, so make sure to support muscle growth through exercise. “Given the importance of lean muscle mass for revving your metabolic rate, regulating your blood sugar, and keeping you physically able overall, pairing resistance training with an intermittent fasting protocol is strongly advised,” Richard Joseph, MD, tells Harvard Health.

RELATED: I Lost 120 Pounds in a Year by Walking. Here's How Many Steps You Need to Do to Lose.

6. No Snacking

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Intermittent fasting can prevent mindless snacking, which causes weight gain. “Take a moment to think about your eating habits,” Melinda Gong, RD CDCES CSOWM, tells UC Davis Health. “If you notice that you tend to snack a lot at night, intermittent fasting could give you a cut-off time and help you eat less. If you notice your last meal of the day is late in the evening, maybe you can eat earlier to allow your body to start fasting at that time.”

7. Health Benefits

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Intermittent fasting has benefits beyond weight loss. “Losing weight and being physically active help lower your risk of obesity-related diseases, such as diabetes, sleep apnea and some types of cancer,” Manpreet Mundi, MD, tells the Mayo Clinic. “For these diseases, intermittent fasting seems to be about as beneficial as any other type of diet that reduces overall calories.”

8. Long-Term Weight Loss

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A study from the University of Illinois Chicago shows intermittent fasting can lead to long-term weight loss. “That is pretty exciting,” Courtney Peterson, a professor of nutrition at the University of Alabama at Birmingham, tells NPR. “This study has the most compelling results suggesting that people can stick with it, that it's not a fad diet in the sense that people can do it for three months and they fall off the wagon for a year.”

RELATED: 10 Simple Ways To Lose Weight for Women Over 50

9. Portion Control and Calories

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Remember, portion control and calories still count for weight loss with intermittent fasting. “During your eating window, focus on eating a healthy diet and maintaining portion control. Don’t eat too many calories and avoid junk food and fast food,” says Family Doctor. “While you don’t need to eat anything in particular, you do need to make sure you’re getting the nutrition you need. Some people choose to use the Mediterranean diet as a guideline for what to eat. This plan focuses on fruits, vegetables, beans, whole grains, and fish. You can also choose lean proteins and healthy fats.”

10. Stay the Course!

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Don’t be discouraged by unpleasant symptoms as your body adjusts to the new way of eating. “It may take 2 to 4 weeks for your body to get used to eating on an intermittent fasting schedule. During those first few weeks, you may have headaches and feel hungry, grouchy, or tired,” says Family Doctor. “Know you may feel this way before you start and make a plan to push through these feelings. After a few weeks, your body will get used to this eating pattern and those symptoms should go away. In the end, many people say that feel better following an intermittent fasting lifestyle.”

11. Lower Bad Cholesterol

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Experts say intermittent fasting can positively impact cholesterol and some cancers. “If you add exercise to the mix, it’s a great combination for not only weight loss but also improved health benefits,” says Family Doctor. “Intermittent fasting may help people who have cardiovascular disease, neurological disorders, and some cancers. Intermittent fasting may also help lower your bad cholesterol and improve symptoms of arthritis.”

RELATED: 20 Powerful Methods to Achieve Your Best Body Ever

12. Who Shouldn’t Fast?

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Always talk to your doctor before starting any drastic dietary change. “Intermittent fasting is safe for many people, but it's not for everyone,” Dr. Mundi says. “Skipping meals may not be the best way to manage your weight if you're pregnant or breast-feeding. If you have kidney stones, gastroesophageal reflux, diabetes, or other medical problems, talk with your doctor before starting intermittent fasting.” And if you enjoyed this article, take advantage of these 15 Quick Ways to Lose Body Fat Percentage in a Week.

10 Foods That Secretly Burn Fat After 40
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Evidence-Based

This content references scientific studies and academic research, and is fact-checked to ensure accuracy.

Our team of licensed nutritionists and dietitians strives to be objective, unbiased, and honest.

We are committed to bringing you researched, expert-driven content to help you make more informed decisions around food, health, and wellness. We know how important making choices about your overall health is, and we strive to provide you with the best information possible.

Let's face it—hitting 40 comes with some unwelcome surprises for most of us. Suddenly, those extra pounds seem to appear out of nowhere, and the weight loss strategies that worked in your 30s just don't cut it anymore. But before you throw in the towel, here's some good news: certain foods can actually help kick your metabolism back into gear.

We've dug into the latest research from top medical institutions and talked to leading experts to uncover the foods that can help you burn fat after 40. No fad diets or miracle pills—just real, science-backed nutrition that works.

Why Your Body Changes After 40 (And What to Do About It)

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"It doesn't matter what you've always done before—that doesn't fly anymore," saysDr. Monica Christmas, who runs the menopause program at University of Chicago Medicine. She's seen countless patients struggle with the same story. "When your hormone levels drop, your body starts losing muscle, and that means you're burning fewer calories even at rest."

Dr. Robert Creel from Cleveland Clinic puts it bluntly: "Your muscles are like engines that burn fuel. The more muscle you have, the more calories you burn just sitting on your couch." After 40, maintaining that engine becomes job number one.

Ready to refuel your body's fat-burning potential? Let's dive into the foods that can help.

RELATED:8 High-Protein Foods with Nearly Zero Calories That Melt Fat

1. Lean Proteins

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Think of protein as your body's ultimate fat-fighting fuel. Chicken, fish, lean beef, tofu—they all help preserve precious muscle mass that naturally diminishes after 40.

Here's something fascinating from Harvard researchers: your body burns 15-30% of protein calories during digestion, compared to just 5-10% for carbs and a measly 0-3% for fats. That extra calorie burn happens automatically, just by choosing protein-rich foods.

Dr. Roger Blumenthal from Johns Hopkins Medicine loves to remind his patients: "Your muscles are literally the engines that burn calories in your body. Feed them right, and they'll work for you around the clock."

How to enjoy it: Start your day with eggs and veggies, grab a grilled chicken salad for lunch, or try a palm-sized portion of wild salmon for dinner. Aim for 25-30 grams of protein at each meal to keep your metabolism humming.

2. Greek Yogurt

Serving of Yogurt with Whole Fresh Blueberries and Oatmeal on Old Rustic Wooden Table. Closeup Detail.

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That creamy container of Greek yogurt in your fridge? It's actually a secret weapon against stubborn fat. With double the protein of regular yogurt and a healthy dose of probiotics, it's a one-two punch for your metabolism.

Dietitians at the Cleveland Clinic have found that the probiotics in yogurt help balance gut bacteria—which might be even more important after 40, when digestive efficiency naturally declines. Plus, the calcium in Greek yogurt has been linked to lower levels of belly fat, which becomes more of an issue with age.

How to enjoy it: Skip the sugary flavored versions and go for plain. Add a drizzle of honey and berries for a satisfying snack, use it as a sour cream replacement, or blend it into smoothies for a protein boost.

RELATED:20 Foods You Didn’t Know Were Ultra-Processed

3. Fatty Fish

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Salmon, mackerel, and sardines aren't just delicious—they're packed with omega-3 fatty acids that fight the inflammation that often increases after 40.

Scientists at the NIH discovered something remarkable: omega-3s can increase your resting metabolic rate by up to 14% and boost fat burning during exercise by a whopping 27%. Talk about a winning combination.

"When we look at heart health after 40, fatty fish really shines," says a cardiologist at Johns Hopkins Medicine. "The same omega-3s that protect your heart are also helping reduce that internal inflammation that makes weight loss so difficult in midlife."

How to enjoy it: Aim for two servings of fatty fish weekly. Try simple grilled salmon with lemon or sardines on whole-grain toast for lunch, or add mackerel to your favorite salad.

4. Whole Grains

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Forget what you've heard about cutting all carbs. Your body after 40 still needs them—just the right kind.

Researchers at Cleveland Clinic found something surprising when they studied whole grains in people under 50: those eating whole grains instead of refined ones had three times better blood pressure readings. That's huge for metabolic health, which directly impacts how well you burn fat.

"Whole grains provide steady energy without the crashes," explains a nutrition researcher at Cleveland Clinic. "After 40, those energy crashes can trigger stress hormones that promote fat storage, especially around the middle."

How to enjoy them: Start your day with steel-cut oats, swap white rice for brown or quinoa, and choose whole grain bread with at least 3 grams of fiber per slice.

5. Eggs

Avocado toast with poached egg on a wooden board. Breakfast concept.​Don’t Skip BreakfastShutterstock

Eggs have made a major comeback in nutrition circles, and for good reason. They're nature's perfect little package of high-quality protein, vitamin D, and choline—a nutrient that helps your body burn fat and is often lacking in our diets.

Research from the University of Connecticut found something interesting: people who eat eggs for breakfast naturally eat fewer calories throughout the day. The protein and healthy fats keep hunger hormones in check—a major win when battling age-related weight gain.

How to enjoy them: A two-egg breakfast with veggies and a slice of whole-grain toast makes a perfect metabolism-boosting morning meal. Hard-boiled eggs also make great portable snacks when you need something satisfying on the go.

RELATED:I'm a Nutritionist and These are the Best Banana Recipes For Weight Loss

6. Legumes

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Lentils, black beans, and chickpeas might not be the sexiest foods in your kitchen, but they pack a one-two punch against age-related weight gain: fiber and protein.

Harvard researchers have found that this combination helps stabilize blood sugar—crucial after 40 when insulin resistance becomes more common. When your blood sugar stays steady, you avoid the energy crashes that lead to cravings and overeating.

How to enjoy them: Toss chickpeas into your salad, add lentils to soups, try bean-based pasta, or whip up a quick lunch of black bean and avocado wrap.

7. Green Tea

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Green tea isn't just a soothing ritual—it's loaded with compounds that give your metabolism a gentle nudge in the right direction.

NIH research shows that the catechins and caffeine in green tea work together to boost metabolism beyond what caffeine alone can do. While no single food or drink works miracles, green tea drinkers consistently show better results in weight management studies.

How to enjoy it: Replace your afternoon coffee with green tea, or start your morning with a cup. For maximum benefits, brew your own rather than buying bottled versions with added sugar.

8. Nuts and Seeds

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"They're calorie-dense, but that doesn't mean you should avoid them," says Harvard Health about nuts and seeds. In fact, people who regularly eat nuts tend to be leaner than those who don't—seemingly contradicting their high calorie count.

The protein, fiber, and healthy fats in almonds, walnuts, and flaxseeds create the perfect satisfied feeling that helps prevent overeating. Plus, they require more energy to digest than many other snacks.

How to enjoy them: Stick to about 1/4 cup (a small handful) daily. Add a tablespoon of ground flaxseeds to your morning smoothie, sprinkle chopped walnuts on your salad, or grab a small handful of almonds for an afternoon snack

RELATED:20 Superfoods for People Over 50

9. Leafy Greens

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You've heard it your whole life: eat your greens. After 40, this advice becomes even more crucial.

"When we look at the most successful weight managers after midlife, high vegetable intake is always a common factor," notes a dietitian at Mayo Clinic. "The fiber fills you up, the nutrients support metabolism, and the volume satisfies hunger cues—all with minimal calories."

How to enjoy them: Start meals with a simple salad, add spinach to smoothies (you won't taste it), wrap sandwich fillings in large lettuce leaves instead of bread, or roast kale with a little olive oil for a crunchy snack.

10. Water

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It sounds too simple to be true, but researchers at the University of Utah discovered that properly hydrated people burn more calories than those who are even slightly dehydrated. In fact, dehydration can slow metabolism by as much as 3%—and many of us walk around mildly dehydrated without even realizing it.

After 40, our thirst signals often become less reliable, making conscious hydration even more important.

How to enjoy it: Start the day with a full glass of water, keep a refillable bottle with you, add fruit slices or herbs for natural flavor, and eat water-rich foods like cucumber, watermelon, and strawberries.

Putting It All Together: Your After-40 Eating Strategy

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Here's what Dr. M. Regina Castro from Mayo Clinic tells her patients who are struggling with midlife weight changes: "You need to reset your body's metabolic expectations through consistent, gradual changes. Your meals should feature lean proteins alongside fruits and vegetables—this combination supports your changing metabolism."

Cleveland Clinic experts have another crucial tip: when you eat matters too. "Your body processes the exact same food differently depending on the time of day," they explain. "After 40, eating earlier in the day tends to work better for metabolism than late-night meals."

Dr. Christmas cuts right to the chase with her patients: "You can't exercise your way out of a bad diet, and you can't eat your way out of being inactive. After 40, you need both pieces working together."

The Bottom Line

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These 10 foods aren't magical—they work by supporting your body's changing needs after 40. They help maintain muscle mass, reduce inflammation, stabilize blood sugar, and keep your energy levels steady—all crucial factors in maintaining a healthy weight in midlife and beyond.

The best news? They're delicious, accessible, and can easily become part of your everyday eating. No extreme diets or bizarre superfoods required—just real, wholesome nutrition that works with your body, not against it.

It’s important to remember that weight management after 40 is about more than just food. Regular strength training, quality sleep, stress management, and staying hydrated all work together with good nutrition to keep your metabolism running at its best. And if you enjoyed this article, take advantage of these 15 Quick Ways to Lose Body Fat Percentage in a Week.

Laura Try lauratryuk
Copyright Laura Try/YouTube/Instagram
Evidence-Based

This content references scientific studies and academic research, and is fact-checked to ensure accuracy.

Our team of licensed nutritionists and dietitians strives to be objective, unbiased, and honest.

We are committed to bringing you researched, expert-driven content to help you make more informed decisions around food, health, and wellness. We know how important making choices about your overall health is, and we strive to provide you with the best information possible.

We spend hours hunched over desks and slouched on couches, rarely challenging our bodies to move the way they naturally should. Digital coachLaura Try, with over 170,000 YouTube subscribers, invites us to reclaim a fundamental human position that many of us have lost: the deep squat. "Modern-day living and this chair-filled life is causing some of us to move less and with less range of motion," Laura explains. Try this simple test to discover where your mobility stands—you might be surprised at what you learn about your body.

What Is the Deep Squat Test?

The deep squat test challenges you to hold a deep squat position for as long as possible, ideally reaching the full 10 minutes. "The deep squat, otherwise known as the Asian or primal squat, is meant to be a resting position," Laura says. The challenge requires no equipment and can be done anywhere. It's not just about holding the position but assessing how your body responds to this natural human posture.

RELATED:5-Minute Walking Workouts for Women Over 40 to Burn Fat at Home

The Lost Resting Position

What we now consider an exercise was once a normal resting position. Babies naturally squat with ease, and people of all ages in many cultures around the world use this position daily. It's not about age or special abilities—it's about regular practice. Laura points out, "They do it all the time and perhaps we should too." Being able to get into a deep squat is an indicator of total body mobility.

Why We Struggle With Squatting

Modern living has dramatically reduced our need to get low to the ground. "Once upon a time we'd have crouched down to light a fire, prepare our meals or investigate an edible plant growing on the ground. Now we have most things that we need at a convenient height," Laura notes. Our chair-dependent lifestyle has created what fitness expert Kelly Starrett calls "an imbalance between the environment and organism"—the way we live doesn't match what our bodies are designed to do.

Benefits Beyond Flexibility

The deep squat offers more than just improved mobility. "This concertina effect, even though our body is folded over, it kind of untangles the body by unlocking the ankles, hips and back," Laura explains. Regular practice can help with total body alignment, potentially reducing lower back pain and other issues. The position creates a full-body stretching and strengthening effect that counters the tightness from sedentary living.

RELATED:Tone Sagging Arms in 2 Weeks With These 5 Exercises

Making the Squat Accessible

Not everyone can immediately drop into a perfect deep squat—and that's perfectly okay. "Practicing this doesn't require you to be miserable; it can be enjoyable," Laura reassures. She suggests several modifications: placing something under your heels, using the wall for support, or even sitting on a low block. The goal isn't perfection but spending time in a version of the position that works for your body.

Laura's Personal Journey

Even fitness professionals struggle with this fundamental movement. "Believe me when I say six or seven years ago I could not get into a deep squat let alone stay here," Laura admits. Her ankles were tight, her shins would burn, and her hips and lower back would scream in protest. The position felt completely unnatural to her at first, defying the idea that it could ever be restful. Yet with consistent practice, her body adapted.

The "Use It or Lose It" Principle

Our bodies adapt to the demands we place on them—or don't place on them. "If we don't use our bodies and joints to their full range of motion what happens? They tighten up, use it or lose it," Laura emphasizes. By regularly practicing the deep squat, we signal to our body that this range of motion is important, helping to maintain or restore natural mobility that many people lose over time.

RELATED:I Got My Best Body After 50 and Here’s How You Can, Too

Beyond Static Holding

The deep squat isn't just about getting down and staying down. "The thing about doing this is it isn't just about getting down here and staying down here but having the ability to get up from this position too which requires leg strength," Laura explains. This functional movement builds both mobility and strength, supporting everyday movements and potentially reducing injury risk as we age.

Making It Part of Daily Life

You don't need to set aside special time for deep squat practice. "Do a bit of weeding in your garden in this position, do some playtime with your children or grandchildren in this position, watch some TV in this position," Laura suggests. Even short periods throughout the day add up. The key is consistency, not duration—even 10 seconds at a time can help restore this natural movement pattern.

RELATED:20 Superfoods for People Over 50

The Routine That Worked for Laura

Consistent practice yields results, even if progress seems impossible at first. "The routine that really helped me get better at my deep squat over the years is the Ido Portal squat routine," Laura shares. She incorporated a shortened version into her warm-up routine for years, not realizing how much she had improved until suddenly the position felt comfortable. The transformation happened gradually through consistent practice over nine years.

A Test of Mental Resilience

The squat test challenges your mind as much as your body. "I can't say it's particularly comfortable; my hips feel really tight, my lower back is stretched, and my shins are burning a little bit," Laura admits at the nine-minute mark of her demonstration. Yet she persists, showing that mental fortitude is part of the process. The test builds not just physical capacity but also the ability to sit with discomfort.

Start Where You Are

Everyone's squat journey begins at a different place. Laura encourages readers to try the test regardless of their current ability level. "If you're trying this then I'd love to know how you're doing and how it feels," she says, inviting community participation. Whether you can hold the position for 10 seconds or 10 minutes, the key is starting the process of reclaiming this fundamental movement pattern. And if you enjoyed this article, don't miss12-3-30 Walking Method: 20 Proven Tips to Lose Weight Faster.

Melanie Abeyta harmony aesthetics
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The bad news? There is no such thing as a fountain of youth. The good? There are foods you can eat to improve longevity. “Our skin reflects our overall health, and diet plays a massive role. The combination of the antioxidant effect manifests in improving the cell barrier, increased collagen production, and the enhancement of the natural oils in the skin, reflected in vibrant, youthful, and luminous skin and a reduction of fine lines and wrinkles. When skin is unhealthy, these are much more visible,” explainsMelanie Abeyta, Aesthetic Nurse Practitioner, Longevity Coach, and Owner of Harmony Aesthetics Center. She recommends focusing on an anti-inflammatory-based diet with lots of fresh fruit, water, and probiotics, which can help balance your gut, affecting your skin. “Incorporating these foods into your diet should be easy, and a variety of at least four of these foods, if not more, should be eaten daily,” she says.

Almond Milk

Almond milk in glass bottle and jug on beige background. Close up. Healthy vegan eating. Lack of cholesterol.Shutterstock

Almond milk is an excellent source of vitamin E, a known antioxidant. “Antioxidants protect cells from damage caused by free radicals which can often cause irreversible damage to the skin because it contributes to collagen and elastin depletion,” says Abeyta. Collagen and elastin are essential substances that give the skin elasticity and firmness. “The collagen and elastin supply of the skin is depleted after prolonged exposure to free radicals. As you age, your body cannot replenish the depleted supply; this is the primary cause of wrinkles, fine lines, and other skin blemishes. Vitamin E, present in almond milk, protects the skin from the harmful effects of free radicals and this makes the skin healthy and younger-looking.”

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Avocado

Whole and cut avocados on grey marble table, flat layShutterstock

“Avocado is great because it contains Vitamins C and E and essential fatty acids that decrease inflammation and redness and improve fine lines and wrinkles. It also contains antioxidants that are important to prevent UV damage and help shed dead skin cells on the skin's surface,” she continues.

Blueberries

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Blueberries are high in Vitamins A and C, which have a high antioxidant content to help protect the skin from sun damage. “Vitamin A is a precursor to retinol and has a strong antioxidant and anti-aging effect,” says Abeyta.

Carrots

Harvesting carrots. Female hand with bunches of carrots with tops.​VegetablesShutterstock

Carrots are not only good for your eyes but are also excellent for smooth skin, says Abeyta. “Carotenoids, found in carrots, are your protection from everyday pollutants and will prevent wrinkles. The beta carotene in carrots is a skin-friendly nutrient converted to vitamin A inside the body and can protect your skin from the sun’s harmful rays. It also helps repair skin tissues while protecting the skin from harmful radiation,” she explains.

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Coconut

Glass with fresh coconut water and coconuts on the table.Shutterstock

“Coconut is not only highly nutritious and rich in fiber, vitamins, and minerals, but it also helps support the natural chemical balance of the skin to help prevent wrinkles and functions as a protective antioxidant,” says Abeyta. “It's also great for hydrating both skin and hair and helps prevent dehydration when taken by mouth, as it contains loads of electrolytes. Coconut also helps control dandruff.”

Cucumber

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Cucumber is a natural anti-inflammatory vegetable that can calm and soothe skin. “Plus, it is loaded with antioxidants and nutrients such as vitamin C and folic acid, which help reduce swelling and puffiness,” she adds. “Vitamin C helps stimulate new cell growth, and folic acid helps fight environmental toxins that can make your skin look tired or age prematurely. When combined, these help your skin look firmer and healthier. Cucumber can also help reduce breakouts as it can help cleanse the skin and tighten pores.”

Green Tea

Japanese green teaShutterstock

Green Tea is high in antioxidants, such as Vitamin C, and has anti-aging benefits that help fight free radicals to protect your skin from environmental stressors that can damage and age it. “It also contains Vitamin A, which is known to help improve the skin’s texture, and Vitamin B, which helps reduce redness. Plus, it has soothing properties and will help brighten the skin,” Abeyta explains.

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Nuts

A variety of nuts in wooden bowls.​NutsShutterstock

Nuts such as walnuts and almonds not only help strengthen the skin cell barrier but also the natural oil barrier of the skin, which ultimately helps prevent sun damage. “Because they contain antioxidants, vitamins, and healthy fats, they will help reduce the appearance of fine lines and wrinkles and skin pigmentation while improving the overall appearance of the skin,” she explains.

Olive Oil

The moment olive oil is poured into a glass bowl set against a wooden backgroundShutterstock

Olive oil contains four major antioxidants, which allow it to work as a cleanser and moisturizer. “Among these antioxidants are Vitamins A and E. Vitamin E has anti-aging benefits because it helps restore skin elasticity, reducing wrinkles,” Abeyta maintains.

Pumpkin

Cut fresh ripe pumpkin on grey backgroundShutterstock

Pumpkin is loaded with beta-carotene, a powerful antioxidant. “This converts to Vitamin A which helps prevent wrinkles and keep your skin youthful and moisturized. This is the perfect food if you are experiencing dry skin. Pumpkin is also loaded with Vitamin C, another antioxidant that protects collagen and boosts our immune systems,” says the expert.

Spinach

Fresh spinach leaves in bowl on rustic wooden table. Top view.Shutterstock

Spinach is high in Vitamin C, which is essential for collagen production, and Vitamin A, which is vital for combatting inflammation and promoting cell turnover, which is essential for anti-aging. “Spinach is also rich in beta-carotene, which allows proper moisture retention in the skin to help fight wrinkles while removing dead skin cells for healthier, brighter skin,” Abeyta maintains.

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Sweet Potatoes

Organic Asian sweet potatoes holding by hand​Sweet PotatoesShutterstock

“Sweet potatoes contain 200% of the recommended daily value of Vitamin A, which helps promote the growth of new skin cells and increases the rate at which this happens, leaving you with vibrant skin,” says Abeyta. Also, from one sweet potato, you’ll get three grams of fiber, which keeps your digestive tract healthy. “A functioning digestive tract can help keep breakouts to a minimum.”

Tomatoes

Orange,,Red,And,Yellow,Cherry,Tomatoes.,Mix,Colorful,Tomatoes,InShutterstock

Tomatoes are rich in vitamins A, B, C, K, alpha and beta-carotene, lutein, and lycopene. “Lycopene is especially beneficial because it’s a carotenoid with a powerful anti-cancer effect. These are all great antioxidants that help the skin maintain healthy collagen and reduce the risk of skin damage,” she claims.

Turmeric

Close-up,Turmeric,(curcumin),Powder,In,Wooden,Spoon,With,Fresh,RhizomeShutterstock

“Turmeric has brightening and anti-inflammatory properties, which help with melasma and inflamed acne. It will also help soothe and even out the skin, boost collagen production, and help with hyperpigmentation. Because it contains curcumin, a potent antioxidant, it will help neutralize free radicals that damage skin cells and contribute to aging,” Abeyta tells us. And if you enjoyed this article, take advantage of these 15 Quick Ways to Lose Body Fat Percentage in a Week.