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10 Side Effects of Rapid Weight Loss

Losing weight fast may seem ideal, but there are a few side effect to look out for.

Leah Groth
By Leah GrothMay 13, 2024
Leah Groth
Writer, Editor, and Content Creator
Leah Groth has decades of experience covering all things health, wellness and fitness related.
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FACT CHECKED BY Christopher Roback
Woman looking in the mirror and checking her hair.
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Leah Groth
By Leah GrothMay 13, 2024
Leah Groth
Writer, Editor, and Content Creator
Leah Groth has decades of experience covering all things health, wellness and fitness related.
See Full Bio
Follow:
FACT CHECKED BY Christopher Roback
Nutrition & Diet

Losing weight fast can seem like a dream come true. However, there are some negatives that come along with rapid weight loss you should consider before taking a GLP-1 drug like Ozempic or going on a drastic diet. We asked some of the top doctors, plastic surgeons, and weight loss experts to reveal major side effects of rapid weight loss – via either the natural way or using weight loss drugs – to look out for.

Fat Deposits

Pen,Injection,Semaglutide,Ozempic, diabetes, medicine, medication, diet, weight, lossShutterstock

While losing weight reduces overall body fat, deposits still exist. “Treatments like Ozempic help with rapid weight loss, but fat still exists in a reduced size,” Vishal Verma, MD, Founder of Revive Med Spa, says, recommending treatments like CoolSculpting to help “eliminate the fat cells, furthering the long-term results.”

RELATED:20 Possible Ozempic Side Effects

Uneven Skin Tone or Texture

Portrait of a man worried about hair lossShutterstock

There is also the appearance of uneven skin tone/texture with weight loss. “Stretch marks may become more apparent with weight loss, so resurfacing treatments can help even tone and texture for a more youthful, radiant glow,” says Dr. Verma. “

Hair Loss

Woman's hand holding hair strands fallen on a comb in close-upShutterstock

Hair loss can be a potential side effect of rapid weight loss. This is often due to nutrient deficiencies, stress, and hormonal changes that occur when the body loses weight quickly.

RELATED: 20 Incredible Ozempic Success Stories of All Time

Unplanned Pregnancies are Being Examined

Flat,Belly,Expecting,Baby,pregnant,diet,healthShutterstock

Losing weight can impact fertility. "Weight loss can generally be associated with increased fertility by restoring normal ovulation in people who have PCOS or other causes of abnormal cycles," said Dr. Daniel Drucker, a professor and researcher at the University of Toronto's Mount Sinai Hospital and a pioneer of research into GLP-1 in an interview with CNN.

Ileus

woman clutching her stomach with her hands in discomfortShutterstock

Ileus, “which is a temporary condition where your intestine can't push food and waste out of your body, is an unofficial side effect due to the effects of slowing down the gut movement,” says Kylie Bensley, MS, RD and founder of Sulinu Nutrition. If you think you have this, she recommends seeking medical advice.

Muscle Loss

Bearded thin man measuring biceps, muscles of his left arm with a yellow tape measure. He's calm, serious, quiet. Wearing blue t-shirt. White background.Shutterstock

Sue Decotiis, MD, NYC weight-loss doctor, notes that there are a few reasons why rapidly losing weight leads to muscle loss. “There are many people who lose muscle because they aren’t drinking enough water. Water intake is imperative. You really need to drink a lot of water when you’re burning that much fat. If you are not drinking enough water, your body won’t burn fat, and you’ll lose muscle,” she says. The other reason is losing weight rapidly, which often leads to losing muscle. To mitigate this, make sure to lift weights or do another form of muscle-strengthening exercise.

RELATED:What Happens to Your Body When You Stop Taking Ozempic

More Self-Esteem

Happy couple enjoy outdoor leisure activity together carrying and using a bike and laughing a lot. Love and friendship with mature man and woman in youthful lifestyle. Concept of joyful and excitementShutterstock

A positive side effect? “I’ve seen a lot of positive effects on personality in my practice. When people lose weight, they have better self-esteem, and they feel more confident in their own skin,” says Dr. Decotiis. “I have people who were using sedatives for anxiety or depression, and then when they lost weight, they felt better and didn’t need them as much. My patient who has ADHD felt they had better focus and concentration.”

Eating Disorder Triggering

,Woman,,Guilty,Eating,Cake,Cheating,Diet,eating, disorderShutterstock

If you have eating disorders in your history, rapidly losing weight can be triggering. “If there’s a history of an eating disorder, that’s when people can run into some problems. People who used food as a crutch and would go to food for comfort may miss food a lot because they used to get that dopamine hit from using food to make them feel better,” explains Dr. Decotiis. She recommends anyone who has struggled with these sorts of issues to work with a therapist while losing weight.

Decreased Libido

Beautiful young couple in bedroom. Close up of male and female feet under the blanket looking away from each other.Shutterstock

Losing weight might impact your sex drive. “In the beginning, realize there’s a tremendous metabolic change going on in the body that can cause fatigue, and when someone is tired, their libido goes down. As time goes on and you lose more weight and feel better, libido will go back to normal because you’ll feel more confident and better without clothes on,” says Dr. Decotiis.

RELATED: 20 Things You Need to Know About Ozempic and Weight Loss

Saggy Skin

Close-up Of A Woman Holding Arm With Excess Fat On Grey BackgroundShutterstock

According to Dr. Decotiis, some people are complaining about having a saggy butt, face, or loose skin after rapidly losing weight, which has to do with fat loss. “Your skin stretches when you gain weight, so when you lose a lot of weight, sometimes your skin doesn’t fully go back to normal,” she says. “Think of a woman who’s pregnant. When she has a baby, sometimes her stomach takes time to go back to how it was before.” One way to mitigate this effect is by weight training during the weight loss process. “Additionally, as you age, you have less elasticity in your skin, and you cannot produce as much collagen. Your skin bounces back better when you’re younger,” she says.

💪🔥Body Booster: After losing weight fast, make sure to lift weights or do another form of muscle-strengthening exercise to avoid losing muscle.

sustainable weight lossweight lossozempic

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Nutrition & Diet

10 Side Effects of Rapid Weight Loss

Woman looking in the mirror and checking her hair.
Shutterstock
Leah Groth
By Leah GrothMay 13, 2024
Leah Groth
Writer, Editor, and Content Creator
Leah Groth has decades of experience covering all things health, wellness and fitness related.
See Full Bio
Follow:
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 weight fast can seem like a dream come true. However, there are some negatives that come along with rapid weight loss you should consider before taking a GLP-1 drug like Ozempic or going on a drastic diet. We asked some of the top doctors, plastic surgeons, and weight loss experts to reveal major side effects of rapid weight loss – via either the natural way or using weight loss drugs – to look out for.

Fat Deposits

Pen,Injection,Semaglutide,Ozempic, diabetes, medicine, medication, diet, weight, lossShutterstock

While losing weight reduces overall body fat, deposits still exist. “Treatments like Ozempic help with rapid weight loss, but fat still exists in a reduced size,” Vishal Verma, MD, Founder of Revive Med Spa, says, recommending treatments like CoolSculpting to help “eliminate the fat cells, furthering the long-term results.”

RELATED:20 Possible Ozempic Side Effects

Uneven Skin Tone or Texture

Portrait of a man worried about hair lossShutterstock

There is also the appearance of uneven skin tone/texture with weight loss. “Stretch marks may become more apparent with weight loss, so resurfacing treatments can help even tone and texture for a more youthful, radiant glow,” says Dr. Verma. “

Hair Loss

Woman's hand holding hair strands fallen on a comb in close-upShutterstock

Hair loss can be a potential side effect of rapid weight loss. This is often due to nutrient deficiencies, stress, and hormonal changes that occur when the body loses weight quickly.

RELATED: 20 Incredible Ozempic Success Stories of All Time

Unplanned Pregnancies are Being Examined

Flat,Belly,Expecting,Baby,pregnant,diet,healthShutterstock

Losing weight can impact fertility. "Weight loss can generally be associated with increased fertility by restoring normal ovulation in people who have PCOS or other causes of abnormal cycles," said Dr. Daniel Drucker, a professor and researcher at the University of Toronto's Mount Sinai Hospital and a pioneer of research into GLP-1 in an interview with CNN.

Ileus

woman clutching her stomach with her hands in discomfortShutterstock

Ileus, “which is a temporary condition where your intestine can't push food and waste out of your body, is an unofficial side effect due to the effects of slowing down the gut movement,” says Kylie Bensley, MS, RD and founder of Sulinu Nutrition. If you think you have this, she recommends seeking medical advice.

Muscle Loss

Bearded thin man measuring biceps, muscles of his left arm with a yellow tape measure. He's calm, serious, quiet. Wearing blue t-shirt. White background.Shutterstock

Sue Decotiis, MD, NYC weight-loss doctor, notes that there are a few reasons why rapidly losing weight leads to muscle loss. “There are many people who lose muscle because they aren’t drinking enough water. Water intake is imperative. You really need to drink a lot of water when you’re burning that much fat. If you are not drinking enough water, your body won’t burn fat, and you’ll lose muscle,” she says. The other reason is losing weight rapidly, which often leads to losing muscle. To mitigate this, make sure to lift weights or do another form of muscle-strengthening exercise.

RELATED:What Happens to Your Body When You Stop Taking Ozempic

More Self-Esteem

Happy couple enjoy outdoor leisure activity together carrying and using a bike and laughing a lot. Love and friendship with mature man and woman in youthful lifestyle. Concept of joyful and excitementShutterstock

A positive side effect? “I’ve seen a lot of positive effects on personality in my practice. When people lose weight, they have better self-esteem, and they feel more confident in their own skin,” says Dr. Decotiis. “I have people who were using sedatives for anxiety or depression, and then when they lost weight, they felt better and didn’t need them as much. My patient who has ADHD felt they had better focus and concentration.”

Eating Disorder Triggering

,Woman,,Guilty,Eating,Cake,Cheating,Diet,eating, disorderShutterstock

If you have eating disorders in your history, rapidly losing weight can be triggering. “If there’s a history of an eating disorder, that’s when people can run into some problems. People who used food as a crutch and would go to food for comfort may miss food a lot because they used to get that dopamine hit from using food to make them feel better,” explains Dr. Decotiis. She recommends anyone who has struggled with these sorts of issues to work with a therapist while losing weight.

Decreased Libido

Beautiful young couple in bedroom. Close up of male and female feet under the blanket looking away from each other.Shutterstock

Losing weight might impact your sex drive. “In the beginning, realize there’s a tremendous metabolic change going on in the body that can cause fatigue, and when someone is tired, their libido goes down. As time goes on and you lose more weight and feel better, libido will go back to normal because you’ll feel more confident and better without clothes on,” says Dr. Decotiis.

RELATED: 20 Things You Need to Know About Ozempic and Weight Loss

Saggy Skin

Close-up Of A Woman Holding Arm With Excess Fat On Grey BackgroundShutterstock

According to Dr. Decotiis, some people are complaining about having a saggy butt, face, or loose skin after rapidly losing weight, which has to do with fat loss. “Your skin stretches when you gain weight, so when you lose a lot of weight, sometimes your skin doesn’t fully go back to normal,” she says. “Think of a woman who’s pregnant. When she has a baby, sometimes her stomach takes time to go back to how it was before.” One way to mitigate this effect is by weight training during the weight loss process. “Additionally, as you age, you have less elasticity in your skin, and you cannot produce as much collagen. Your skin bounces back better when you’re younger,” she says.

💪🔥Body Booster: After losing weight fast, make sure to lift weights or do another form of muscle-strengthening exercise to avoid losing muscle.

Nutrition & Diet

5 Signs Your Metabolism is Damaged from Dieting

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graciouslynourished/Instagram
Leah Groth
By Leah GrothApr 12, 2024
Leah Groth
Writer, Editor, and Content Creator
Leah Groth has decades of experience covering all things health, wellness and fitness related.
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FACT CHECKED BY Tara Collingwood, ms, rdn, cssd, acsm-cpt
✓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.

If you feel like your metabolism isn’t working efficiently, you aren’t alone. Kelsey Kunik, RD, is a nutritionist who tries to help people “overcome overeating without dieting.” In a recent Instagram video, she discusses metabolism and how yours could be damaged because of dieting. “Do you ever feel like other people are ‘blessed’ and you’re ‘cursed’ when it comes to your metabolism??” she writes in the beginning of the post, going on to explain why and what you can do about it. Body Network also consulted with our Resident RDN, The Diet Diva, Tara Collingwood, MS, RDN, CSSD, LD/N, ACSM-CPT, a Board Certified Sports Dietitian, co-author of the Flat Belly Cookbook for Dummies, to offer her input on the topic.

Some People Try Dieting to Speed Up Their Metabolism, But It Has the Opposite Effect

Kelsey_Kunik_graciouslynourished2graciouslynourished/Instagram

In the video, Kunik explains that oftentimes when someone believes their metabolism is damaged, they might go to the wrong extremes. “That might lead you to dieting to lose weight or speed things up, but the truth is that dieting, especially dieting on and off over several years, can have a massive impact on how efficiently you burn calories,” she says.

Here Are the Signs and Symptoms Yours Needs Help

Kelsey_Kunik_graciouslynourished1graciouslynourished/Instagram

“While this is NOT medical advice and it’s not the ONLY possible cause of these symptoms, your metabolism could use a little help if you experience any of these,” she says.

Holding Onto Extra Weight

Overweight unhappy asian woman extra heavy body cellulite sitting on bed at home. Upset oversized lady worry diet weight loss suffering from extra weight. Obesity unhealthily concept.Shutterstock

Are you feeling heavier than usual? The first sign is “holding on to extra weight,” says Kelsey.

Fatigue

Sleepy young woman drinking coffee, feeling tired, suffering from insomnia and sleeping disorder. Sad female sitting in modern kitchen interior, empty spaceShutterstock

The second sign your metabolism is damaged? “Feeling tired,” she says.

Constipation

Door handle open to toilet can see toiletShutterstock

Are you having trouble going to the bathroom? “Number three on the list is constipation,” she says.

Always Feeling Cold

Frozen. Sad latina female sit on couch at freezing cooled studio flat in warm cap and blanket shiver tremble with cold. Unhappy young lady spend time at home feel bad suffer of heating system problemsShutterstock

Are you getting the chills more than usual? The fourth sign your metabolism is damaged is that you are “always feeling cold.”

Hormone Imbalances

Depressed woman sitting alone on the bed with hands on head feel stress, sad and worried in the dark bedroom and low light environmentShutterstock

Are you feeling all over the place or unusually hormonal, even when it’s not that time of the month. Number five, “hormone imbalances,” she says.

The Answer: Feed Your Body with Nutrients

Girl holds a paper plate with healthy food sitting on the floor. Home delivery food. Healthy eating concept. When you stay at home.Shutterstock

What should you do about it? “And the answer to repairing your metabolism is NOT another diet,” she continues. “When your body is given nourishing food on a regular basis that’s balanced with high protein, fiber, quality carbohydrates, healthy fats, and plenty of fruits and veggies, it begins to trust that food is available and your metabolism can start to HEAL itself. Your metabolism will NOT improve when your body is in a constant flux of starvation and excess — as if you needed another reason to stop dieting!”

Related: This Is Exactly How to Lose Body Fat This Year

Why Your Metabolism Could Be “Tanking,” According to Collingwood

tara_collingwood6dietdivatara/Instagram

Collingwood agrees on all points. “All of these could be signs that your metabolism is tanking,” she says, offering reasons why it may be happening. “It could be from lack of physical activity, poor diet, eating too little, getting too little sleep, or a variety of other reasons,” she says. “When under stress, the body tries to hang on to what it has which means lowering metabolism to prevent weight loss and cause fatigue and other symptoms.”

💪🔥Body Booster: If you are struggling with your metabolism, resist dieting. Instead, try and take a more balanced approach to nutrition, allowing it to reset.

Nutrition & Diet

10 Signs You Aren’t Consuming Enough Calories

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Leah Groth
By Leah GrothMay 06, 2024
Leah Groth
Writer, Editor, and Content Creator
Leah Groth has decades of experience covering all things health, wellness and fitness related.
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FACT CHECKED BY Christopher Roback
✓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.

The most common sign you are consuming too many calories is that you are gaining weight. But did you know that your body might be sending you signs that you aren’t taking in enough? Lexi Wright is a metabolism, menopause, and fat loss coach whose main goal is helping “women 40+ reset their metabolism, lose weight, improve energy.” In a new post, she explains that not eating enough can have an impact on your health. “I see this with women in their 40s and 50s all the time. They are on the eat less workout plan for losing weight, and it's not working for them,” she writes. “Our bodies are smart, and we need a certain amount of calories for our actual normal body functions.” Here are key signs you aren’t consuming enough calories.

You Are Always Cold

Frozen. Sad latina female sit on couch at freezing cooled studio flat in warm cap and blanket shiver tremble with cold. Unhappy young lady spend time at home feel bad suffer of heating system problemsShutterstock

Are you often feeling cold? It may be because your caloric intake is too low. “Your body is smart and its common response to inadequate calories is to conserve energy to maintain your body core temperature,” she writes.

You Are Always Tired

Female office worker in glasses rubbing tired eyes, exhausted from overworking, sitting at workplace in office.Shutterstock/Prostock-studio

If “you lack energy and feel exhausted all day,” it could have to do with your food intake. “Too low of calories and your body will not have the energy to fuel itself for daily activities,” she writes.

RELATED: Here Is How to Lose 15 Pounds in 45 Days

You Are Stuck in a “Binge, Restrict” Cycle

,,Food,Fridge, refrigerator ,coldShutterstock

Another sign? “You are constantly in a binge restrict cycle because the calories are so low and you trigger feelings of deprivation which leads to cravings and binging,” says Lexi.

Hair Loss

Millennial girl with hair loss problem looking in mirror at homeShutterstock

Losing hair is another sign you aren’t consuming enough calories. “Low calories can deprive your body of the nutrients it needs for a lot of body functions including hair growth and maintenance,” says Lexi.

Constant Hunger

Woman,Feeling,Hungry,Looking,For,Something,To,Eat,In,AmusementShutterstock

“You are hungry all the DAMN time even though you are eating a good amount of protein and fibre to fill you up,” is the fifth sign you aren’t getting enough calories. “Your body is very smart and is telling you something!” she says.

You Lose Weight Fast

Full length of excited Indian woman sitting on scales at home, overjoyed with success of her slimming diet, side view. Emotional Asian lady achieving her weight loss goal, making YES gestureShutterstock

A more obvious sign? “You drop weight fast. More than 0.5% of your body weight every week,” she writes. “Rapid weight loss can indicate an excessively low calorie intake, which may compromise your overall health and metabolism.”

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

Irregular Periods

Young woman suffers, writhes in abdominal pain lying on couch in living room at home interior. Acute pain in bloating pms. Teenage girl with pain problems bowel diseaseShutterstock

If “your period goes bye bye or is irregular,” it may be a sign you aren’t eating enough. “When our bodies are under stress it’s defense mechanism is to shut down things that take a lot of energy and having a baby is one of those!” she writes.

Mood Swings

Dark-haired girl covers her face with handsShutterstock

If you are experiencing mood swings “and can’t get motivated,” you probably aren’t consuming enough calories. “Low calories can impact your mood and mental well-being, leading to irritability, mood swings, and overall motivation,” she writes.

You Can’t Build Muscle

A woman rubbing her upper arm at the fitness gymShutterstock

“You have been lifting weights and you are not getting any stronger,” is another clear sign. “Muscle is expensive calorie wise to keep and build. When we don’t have the calories to fuel workouts and muscle growth this is one of the first things that go,” she writes.

Constipation

Door handle open to toilet can see toiletShutterstock

The last sign you aren’t consuming enough calories? “You are constipated all the time,” she writes. “Lack of calories usually means lack of nutrients including fibre. Proper digestion is how we clear out all the ‘STUFF’ having a bowel movement at least once a day is essential to overall health,” she maintains.

💪🔥Body Booster: Just as eating too many calories per day can negatively impact your overall health, not eating enough can too. Try and hit your daily caloric intake goals to maximize health.

Fitness & Workouts

10 Weight Loss Mistakes You Need to Stop Making

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Alek Korab
By Alek KorabOct 18, 2024
Alek Korab
Editor
Alek Korab is Founding Editor of Body Network
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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.

Many of us have stood in front of the mirror, promising ourselves that this time, we'll finally shed those extra pounds - and fast. However, the desire for quick results often leads to mistakes that can be counterproductive or even harmful. Read on to learn common pitfalls to avoid when attempting rapid weight loss, with insights from fitness and nutrition experts.

Setting Unrealistic Goals

Hand with Pencil making goals list to lose weightShutterstock

One of the biggest mistakes is setting unrealistic goals, such as aiming to lose 5 percent body fat in just two weeks. Blanca Garcia, RDN, cautions, "A 5% body fat loss in two weeks is not a recommendation I would make. The healthier, more achievable goal is to make lifestyle changes that are small but doable."

Falling for Crash Diets

Calories Nutrition Food Exercise ConceptShutterstock

Crash diets or extreme calorie restriction can be tempting for quick results, but they're often counterproductive. Fitness expert Jillian Michaelswarns, "When you starve the body, you're telling your body, 'Oh my god, food is really scarce.' This can lead to metabolic damage and the dreaded yo-yo effect."

Neglecting Exercise

Overweight guy sitting on the couch with remote in hand trying to watch some TV.Shutterstock

Contrary to popular belief, exercise plays a crucial role in weight loss. Michaels advises, "If you're trying to lose weight, it's like 80% exercise because you can't starve it off." Neglecting physical activity can significantly slow down your weight loss progress.

RELATED: I Lost 42 Pounds with These 6 High-Protein Meals

Ignoring Macronutrient Balance

Set of natural food high in protein on grey background, top viewShutterstock

Focusing solely on calorie reduction without considering macronutrient balance can lead to nutrient deficiencies and muscle loss. It's important to maintain a balanced diet that includes adequate protein, healthy fats, and complex carbohydrates.

Overexercising

young sports woman working out, running and feeling tired on treadmill in gymShutterstock

While exercise is crucial, overdoing it can be counterproductive. Garcia advises, "Setting overly ambitious goals with physical activity can lead to injury, but also can have feelings of despair if the goals are not met."

Neglecting Sleep and Hydration

Insomnia and social media addiction concept. Young woman uses smartphone while lying in bed at night, tonedShutterstock

Many people underestimate the importance of sleep and hydration in weight loss. Lack of sleep can disrupt hormones related to appetite, increasing the likelihood of overeating. Similarly, dehydration can slow down metabolism and lead to overeating due to thirst being mistaken for hunger.

Relying Solely on the Scale

Female bare feet with weight scale on wooden floorShutterstock

Focusing only on the number on the scale can be misleading and demotivating. Catherine Gervacio, registered dietitian, suggests, "Consider factors like energy levels, mood, sleep quality, and overall health as important markers of success."

RELATED: I'm a Petite Nutritionist and These 6 Signs Show You're Actually Losing Weight

Overlooking Muscle Mass

Happy elderly woman celebrating her fitness achievement after a great outdoor workout session, flaunting her strong bicep. Fit senior woman expressing her pride in her successful exercise routine.Shutterstock

Rapid weight loss often leads to loss of muscle mass along with fat. Gervacio advises, "Focus on your proteins and make sure you get the right amount and kind. Aim for a diet that includes a variety of nutrient-dense foods like fruits, vegetables, lean proteins, whole grains, and healthy fats."

Expecting Immediate Results

Unhappy young woman standing in front of a mirror and holding hands on her bloating stomach.Shutterstock

Expecting dramatic results in a short time can lead to disappointment and giving up. Garcia reminds us, "Weight loss that is sustainable for the long term requires changes that are lifelong and can only be sustained if those changes are something a person can actually do."

Ignoring Professional Guidance

Gym customer is getting advice and suggestion from her personal trainer for exercising plan program and getting her evaluation chart from sample blood test for her workout progress conceptShutterstock

Attempting rapid weight loss without professional guidance can be risky. Garcia emphasizes, "Rapid weight loss can be achieved in a safe and sustainable manner through direct work with a doctor and registered dietitian."

RELATED: Here Is How Much Weight You Can Really Lose on Ozempic, According to a Doctor

How to Lose Weight Sustainably

Healthy young woman weighing herself on scaleShutterstock

While the desire for quick weight loss is understandable, it's crucial to approach it healthily and sustainably. Avoid these common mistakes and focus on long-term lifestyle changes for the best results. As Gervacio says, "Understand that achieving long-term health and sustainable changes takes time. Be patient with yourself, and avoid self-criticism. Focus on progress rather than perfection!" And if you enjoyed this article, take advantage of these 15 Quick Ways to Lose Body Fat Percentage in a Week.

Nutrition & Diet

10 Worst Weight Loss Mistakes Experts Say You Could Make

Leah Groth
By Leah GrothJun 02, 2024
Leah Groth
Writer, Editor, and Content Creator
Leah Groth has decades of experience covering all things health, wellness and fitness related.
See Full Bio
Follow:
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 trying to lose weight but aren’t really getting anywhere? According to experts, you might be going about your weight loss journey the wrong way. In fact, even some of the top diet and fitness experts have made weight loss mistakes themselves. Body Network spoke to a few trainers and nutritionists and asked them about the biggest missteps they took on their fitness journeys.

1. Going Overboard with Calorie Counting

CALORIE counting counter application Medical eating healthy Diet conceptShutterstock

While it is good to keep tabs on your food consumption, Risa Sheppard, Master Pilates trainer, creator of The Sheppard Method, advises not to go overboard. “Counting every calorie of every piece of food,” is one of the mistakes she made. “It became time consuming and frustrating.”

Related: I Lost Belly Fat & 17 Pounds With These 6 Simple Hacks

2. Starving Your Body of Carbs

Unhappy Woman refusing to Eat her Pizza Dish in a Restaurant. Disgruntled customer not liking the meal sending it backShutterstock

Mr. America Jason Kozma, a personal trainer in Los Angeles, reveals the biggest mistake he made while preparing for a bodybuilding competition. “I had gotten too heavy bulking up to add more muscle mass,” he explains. He spent four months dieting for a spring show “and still didn’t get in shape.” After a short break he reset his goal to a fall show and dove headlong into his diet. “I was using an extremely low carb approach as I felt I had too much fat yet to burn. What I actually did was I starved my muscles of carbohydrates for so long that at the end my body couldn’t assimilate carbohydrates and I couldn’t ‘pump u’ for the show,” he continues. “My body fat measured lower than ever for this show but I didn’t look as good as I had a year and a half prior at a higher body fat level. The net result was that I lost muscle using this approach: I was actually smaller and lighter than I was before the ‘bulk up.’” Note: He still won the show!

3. Doing Too Much Cardio

young sports woman working out, running and feeling tired on treadmill in gymShutterstock

Diet and fitness expert Adita Yrizarry-Lang, ISCA, NASM, ACE, AFAA, reveals that one of the biggest mistakes she made was doing too much cardio. “When I first started in fitness, this was the prescription…do a lot of cardio. The reality is that you burn more calories when you have muscle on your body, combining weights with cardio is the right way to do it,” she says.

4. Not Looking at Serving Size on Packages

Young woman label on pasta package while shopping food in supermarket.Shutterstock

Yrizarry-Lang claims that another mistake is only looking at calories on a package, and not the serving size. “We were mesmerized by the lo-cal labeling on a package,” she says. “Unfortunately, we never looked at the serving size and then came to realize we were ingesting too many calories at a time.”

5. Falling Victim to Low Fat, Highly Processed Foods

Young woman putting goods on counter in supermarketShutterstock

Just because something is low-fat doesn’t make it healthy. Yrizarry-Lang says that some people consume “too many processed carbs, because they are low fat.” While this might be okay for runners, going for 10 to 20 mile runs, “those carbs convert to fat,” for most of us.

Related: Alexia Clark Flaunts Chiseled Midsection and Reveals 3 Ab Mistakes You Are Making

6. Daily Weigh-Ins

point of view - closeup feet for asian woman measure weight on scaleShutterstock

Weighing oneself every single day is another mistake, says Sheppard. “It can be discouraging,” she explains. “Try to weigh yourself less and pay more attention to how your clothes are fitting. Remember muscle weighs more fat so if you are on an intense exercise regime the muscle you gain will trim in less but may not show on the scale.”

7. Crash Diets

I'll eat you tiny pea! Weight loss concept. Close up photo portrait of mad lady's eye looking at small one pea on large big plate on tableShutterstock

If a diet seems too good to be true, it probably is. “The all-time worst” mistake people make is going on crash diets. Why? You might “lose weight at the moment” but you will “gain it back with a few extra pounds,” says Yrizarry-Lang. “This slows down the metabolism and makes it even harder to lose weight at a later date.”

8. Focusing on Exercise for Weight Loss

Exhausted man resting after joggingShutterstock

One of the biggest mistakes people make is “thinking more exercise will cause them to lose weight,” says Sheppard. “80 percent is dieting and 20 percent is exercise,” she reminds.

9. Falling Victim to “Get Thin Fast” Scams

Lots of colorful pills and capsules for different symptoms. Selective focus, noise. Concept of health and medicineShutterstock

Sheppard strongly advises against any products or diet that claim to help with rapid weight loss. “Do not succumb to quick weight loss scams or dangerous pills. Remember Rome wasn’t built in a day and neither is weight loss,” she says.

Related: 15 Foods That Fight Fat

10. Comparing Yourself to Others

Shocked young woman wearing too big loose jeans after successful weight loss, posing and looking at her reflection in mirror with open mouth, copy spaceShutterstock

Remember that your fitness journey is your own and “comparing yourself to other people” will “only add to your stress and discouragement,” says Sheppard. “We are all built differently with different bone structure and hereditary genes. Love who you are inside and it will reflect on your outside.”

💪🔥Body Booster: Beware of low-fat, processed foods. Unless you run for 20 miles a day, you should probably pass on a highly processed energy bar – those carbs might convert to fat unless you are working them off.

Nutrition & Diet

10 Wellness Habits to Lose 10 Pounds Before Summer

Paulina Stein, aka Paulina Hefferan paulinastein
Copyright paulinastein/Instagram
Leah Groth
By Leah GrothMar 14, 2025
Leah Groth
Writer, Editor, and Content Creator
Leah Groth has decades of experience covering all things health, wellness and fitness related.
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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.

Swimsuit season is almost here: Are you ready? If not, one expert has some suggestions to help you shape up before slipping into your swimsuit. Paulina Stein, aka Paulina Hefferan, is a celebrity trainer and fitness influencer who boasts over 96,300 followers on Instagram. In a new social media post, she unveils her summer prep plan. “If I wanted to drop 10 pounds before summer, here are 10 wellness habits I’d start doing now,” she writes. “Ready to lose 1.5-2 lbs PER WEEK? Try this!”

Take Probiotics

Her first tip? Take probiotics to restore gut health. “Take 3 Reset Pm Gut cleanse nightly! SUPER IMPORTANT to improve stagnant digestion. Also add in daily probiotic in the AM! Also, gut inflammation can slow down weight loss,” she writes.

Eat in a Small Calorie Deficit

Next, she recommends eating in a slight calorie deficit. “Reduce about 200-300 calories per day (I suggest cutting back on fats that are high in calories like nut butters, oils, or starchy carbs like pasta). Cut out carbs and you’ll drop water weight, not fat!” she says.

RELATED:10-Min Walking Workout Burns Fat at Home, Says Coach

Eat Protein

Amp up your protein intake. “Eat protein at every meal! Eat around 4-6 oz,” she writes. According to clinical trials, consuming more protein than the recommended dietary allowance not only reduces body weight (BW), but also enhances body composition by decreasing fat mass while preserving fat-free mass (FFM) in both low-calorie and standard-calorie diets.

Walk

Walking will also help shape you up fast. “Walk 20-30 minutes per day! This speeds up digestion. BONUS if you can get in 10k + steps daily!” she writes. A 2018 study published in Obesity found a link between walking 10,000 steps a day and weight loss and weight management. Other studies published by the Journal of American Medical Association (JAMA) in JAMA Neurology and in JAMA Internal Medicine also linked walking 10,000 steps a day to less dementia and less cardiovascular disease overall, with less heart disease, less heart failure, and fewer strokes.

Lift Weights

She also recommends strength training. “Add 3 weight lifting days in weekly (Lower body, upper body, full body)” she writes. According to the Mayo Clinic, strength and weight training help reduce body fat, preserve and increase lean muscle mass, and burn calories more efficiently. Strength training may also help you:

  • Develop strong bones
  • Manage your weight
  • Enhance your quality of life
  • Manage chronic conditions
  • Sharpen your thinking skills

Drink Water

Don’t forget to hydrate. “Drink 1 gallon of water daily! SUPER IMPORTANT! Not 1 Stanley or 2. You need 4!” she says. According to the Mayo Clinic, hydration is essential for various reasons. Water helps eliminate waste through urination, perspiration, and bowel movements, keeps your temperature regular, lubricates and cushions joints, and helps protect sensitive tissues.

RELATED:30 Best Protein Foods That Melt Fat Almost Instantly

Sleep

Don’t sleep on sleep. “Try to prioritize 7+ hours of sleep nightly. Lack of sleep can affect hormones and slow down weight loss,” she writes. What are the health benefits of sleep? According to the Sleep Foundation, getting enough z’s is a mood booster, promotes heart health, regulates blood sugar, improves mental function, restores your immune system, helps relieve stress, and aids in weight loss.

Reduce Alcohol

Don’t drink your calories. “Reduce alcohol to 1x per week (stops fat burn!)” she says. Not only are alcoholic drinks high in calories, but when you drink you are more likely to eat unhealthy food and exercise less.

Reduce Salt Intake and Cut Back on Gas-Causing food.

Don’t overlook sodium. “Reduce salt intake (not cut out),” she suggests. Also, cut back on “gas causing food,” she says. “FODMAPS, including seasonings, onions, garlic, broccoli,” she says.

RELATED:7 Simple Daily Exercises To Shrink Hanging Belly Fat

Drink Coffee After Eating

Another surprising suggestion? She says to drink coffee after eating in the morning “to balance cortisol.” According to the Cleveland Clinic, drinking coffee in moderation has several benefits. “It acts on your brain to improve memory, mood, reaction times, and mental function,” they say, citing a study finding that caffeine can improve endurance and performance during exercise. It is also antioxidant-rich, can ward off diabetes, prevent neurologic disease, lower cancer risk, and ward off depression, they point ou

Don’t Go Overboard on the Weekends

Her last tip? Don’t go overboard on the weekends, because they matter. “If you are great during the week and go ravenous on weekend,” she says, noting that it’s all about “balance.” And if you enjoyed this article, take advantage of these 15 Quick Ways to Lose Body Fat Percentage in a Week.

Fitness & Workouts

Muscle vs. Toning: Doctor's Take

Dr. Shannon Ritchey dr.shannon.dpt
5 Strength Training Mistakes That Sabotage Your Weight Loss
Copyright dr.shannon.dpt/Instagram
Leah Groth
By Leah GrothMar 14, 2025
Leah Groth
Writer, Editor, and Content Creator
Leah Groth has decades of experience covering all things health, wellness and fitness related.
See Full Bio
Follow:
✓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.

Many women fear building muscle because they think it will make them look bulky. Instead, they prefer the concept of “toning.” But is there even a difference between the two? Dr. Shannon Ritchey, PT, DPT, is a physical therapist and personal trainer who helps people build muscle via “Gentle Consistency,” she explains in her Instagram bio. In a new post, she tackles the question: What’s the difference between building muscle and toning? You might be surprised by the answer.

This Is What Building Muscle Requires

Dr. Ritchey explains that building muscle requires the following. First, “Using challenging enough resistance and taking each set close to failure,” she says. It also involves diet. “Eating enough protein (the RDs we work with recommend .75-1g per pound of body weight per day)” she reveals.

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

This Is What Toning Requires

Toning (body recomposition) requires three things. “Using challenging enough resistance and taking each set close to failure,” she says. It also required “eating enough protein (the RDs we work with recommend .75-1g per pound of body weight per day),” she says, and also “nutrition for fat loss,” with her RDs recommending either maintenance calories or a small deficit.

Toning and Muscle Building Workouts Can Be the Same

“The fitness industry has made us believe that a toning workout looks different than one that builds muscle. This implies that light weights/high reps burn or spot-treat fat, which isn’t true,” she says.

RELATED:The Only 4 Exercises You Need for Total-Body Fitness

You Don’t Have to Lift Super Heavy to Build Muscle

“You don’t have to lift super heavy to build muscle. Studies show that sets as high as 30 taken close to failure can build as much muscle as lower rep/higher weight. But if you’re doing much more than 30 reps, it isn’t shown to build much (if any) muscle for most,” she says.

Here Are Tips to Know If You’re Lifting Heavy Enough

In another post, she reveals 4 tips to know if you’re lifting heavy enough. “Getting close to failure matters most for muscle growth. Any rep scheme from about 6-30/set will work. Focus less on reps and more on your proximity to failure in each set. That’s why we don’t count reps and don’t give you a timer. We give the time frame as a reference, but always say to stop the set sooner or take it longer to reach YOUR failure point,” she says.

Tip One: You Shouldn’t Be Able to Do More Than 30 Reps

Her first tip to know if you’re getting close to failure? “You shouldn’t be able to do more than about 30 reps with that weight. If you can, go heavier,” she says.

Tip Two: You Should Need to Take a Break

“After your final rep, set the weight down and break for a few seconds. You weren’t close to failure if you could easily keep going after a short break. This is because approaching failure recruits larger muscle fibers, which require minutes to recover, not seconds. Smaller muscle fibers can recover within seconds,” she says.

RELATED:8 No-Equipment Moves That Build Strength Like Weight Training

Tip Three: Your Last Rep Should Take Longer

Tip three? “Try to perform your last rep quickly (of course with good form!). A decrease in rep speed is one of the most reliable ways to know you’re close to failure. If you can quickly perform the movement, you aren’t close to failure, and you can either do more reps or go heavier,” she says.

Tip Four: You Feel a Spike in Heart Rate in Last Few Reps

“If you feel a spike in heart rate in your last few reps, you’re likely close to failure. Larger muscle fibers require more energy, which can increase heart rate. Some lifts will more drastically increase heart rate than others, so this isn’t the most reliable test, but it can be helpful,” she says. And if you enjoyed this article, take advantage of these 15 Quick Ways to Lose Body Fat Percentage in a Week.

Fitness & Workouts

5 Things That Changed Trainer's Physique

Stevie Ann Griffin
Copyright stevieanngriffin/Instagram
Leah Groth
By Leah GrothMar 14, 2025
Leah Groth
Writer, Editor, and Content Creator
Leah Groth has decades of experience covering all things health, wellness and fitness related.
See Full Bio
Follow:
✓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.

Are you trying to lose weight and change your body's shape and composition? One expert claims it all comes down to a handful of diet and fitness habits. Stevie Ann Griffin is a fitness trainer and digital creator who shares tips and tricks on how to get into shape. In a new post, she revealed how she added swerve and definition to her curves. “5 Things That Changed My Physique,” she titled the post, revealing what she did.

Progressive Overload

The first thing that helped change her physique was progressive overload. “Real changes happened when I focused on increasing weights, reps, or sets each week. Strength builds over time, and so do results,” she says.

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

Nutrition

She also maintains that nutrition is 80% of the work. “You cannot outwork a bad diet. Prioritizing protein, whole foods, and eating in a calorie deficit (if fat loss is the goal) is non-negotiable,” she writes.

Sticking to a Plan

Next, sticking to a plan is key if you want to transform your body. “Random workouts = random results. Following a 4-5 day strength split, progressively overloading, and staying consistent is what changed my body,” she says.

She Stopped Overtraining

She also stopped overtraining. “More isn’t always better. Training 2-3 hours a day left me inflamed and exhausted. Recovery is just as important as the work itself,” she points out.

RELATED:10-Min Walking Workout Burns Fat at Home, Says Coach

Cardio & Strength Go Hand in Hand

What is better for transforming your body: Cardio or strength training? Both.“Cardio keeps your heart strong. Strength training builds muscle. You need both—just don’t overcomplicate it,” she says.

RELATED:30 Best Protein Foods That Melt Fat Almost Instantly

Be Consistent

Her final message? “At the end of the day, results come from simple, consistent habits: eat enough protein, strength train, get your steps in, and fuel your body properly. That’s it.”

High-Intensity Interval Training (HIIT)

In another post, she reveals that she is also a fan of high intensity interval training. “There are many opinions on HIIT, but ultimately, it’s about what suits your body. For me, HIIT has been crucial for fat loss. Short bursts of intense activity followed by brief recovery periods keep your heart rate up, enhancing fat burning and calorie expenditure in a shorter time compared to other workouts,” she says. And if you enjoyed this article, take advantage of these 15 Quick Ways to Lose Body Fat Percentage in a Week.

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