10 Foods That Secretly Increase Your Metabolism After 40, According to Dave Asprey

Are you struggling to lose weight after 40? There are foods you can eat to speed up your metabolism, according to Dave Asprey, 4x NY Times Bestselling Author of Heavily Meditated, Health Science and Biotech Entrepreneur, and "The Father of Biohacking." As you age, your mitochondria start to lose their function. "That's not great, because your mitochondria are the organelles responsible for creating all of the ATP (energy currency) in your body and directing that energy to where it needs to go," Asprey tells Body Network. One way you can keep your mitochondria in good shape is by eating foods that support them. "Here are 10 foods that keep your mitochondria and your metabolism running well so you can become lean, fit, and perform at your peak," he says.

Asprey explains that beef is full of fat-soluble vitamins, minerals, and protein. "When you get enough protein, it's easier to put on and maintain muscle. Protein is also very satiating. When you eat more high-quality protein, you feel less hungry and have fewer cravings. It's like nature's Ozempic," he says.

Pasture-raised eggs are "another great way to get high-quality protein and keep cravings at bay," says Asprey. "Whole eggs also contain lots of vitamins, minerals, and choline (a brain nutrient)."

Collagen protein is a great tool for fat loss, according to Asprey. "A recent study found that adding just 5 grams of collagen protein to 25 grams of whey protein increased muscle protein synthesis 33% more than just using whey alone. The more muscle you have, the faster your metabolism will be and the more fat you'll burn," he says.

"MCT oil is a special type of fat made from coconuts. When you consume it, your body rapidly converts it into ketones which your tissues can use for energy. Ketones reduce inflammation and eliminate cravings. Studies show that MCT oil stimulates mitochondrial biogenesis (when your body makes more mitochondria) and increases metabolism," Asprey says.

Coffee, which contains polyphenols like chlorogenic acid, can improve insulin sensitivity and increase your metabolism. "If you're drinking caffeinated coffee, the caffeine induces fat cell breakdown and also speeds up your metabolism," he says.

Cook with lots of herbs! "Not only do herbs protect your food from oxidation, they also contain lots of metabolism-supporting, fat-burning compounds. Oregano, for example, contains carvacrol, which is a compound that may disrupt the fat gain process. Rosemary contains ursolic acid, which can improve muscle mass and increase fat loss," Asprey says.

He also recommends raw grass-fed dairy. "Dairy contains conjugated linoleic acid, which is a type of fat that helps your body burn fat. It's also rich in fat-soluble vitamins that keep your metabolism in top shape," Asprey explains.

While many people say keto is the best way to lose weight, it isn't, says Asprey. "If you don't get enough carbohydrates, your thyroid will slow down and your hormones will suffer. The key is to do a cyclical keto diet where you strategically add carbs every once in a while, to keep your metabolism running," he says. "It's essential to choose low-toxin carbs like white rice, raw honey, or a small amount of in-season fruit. A cool trick is to cook your rice with a little bit of MCT oil and then cool it in the fridge before you eat it. When you do this, the starch in the rice turns to resistant starch, which acts more like fiber and feeds your gut bacteria. You also get a significantly lower blood glucose spike when you eat rice this way. (You can reheat the rice. You don't have to eat it cold)."

Sea vegetables, including nori and kelp, "are great natural sources of iodine, which your body needs to make thyroid hormones," says Asprey. "Your thyroid plays a huge role in controlling your metabolic rate. If you don't have enough thyroid hormone, your metabolism will slow down. Use nori sheets to make your own sushi with your cooked and cooled rice!"

Low-mercury seafood, like wild sockeye salmon or haddock, is a great source of protein and omega-3 fats. "Some studies show that omega-3s increase your metabolic rate," says Asprey. And if you enjoyed this article, don't miss these 8 High-Protein Foods with Nearly Zero Calories That Melt Fat.