You’ve heard they're bad for you. But trans fats also slow down your body's ability to burn fat. "They have an altered shape and make your biochemistry run funny," Hyman says, explaining that trans fat binds to fat and liver cells and slows metabolism. Eating trans fat can also lead to insulin resistance and inflammation, both of which cripple metabolism and can cause weight gain.
Slimming down over 40 doesn’t have to mean meager meals. In fact, eating a big breakfast might just help you reach those goals. In fact, a 2013 study reveals that women who ate the bulk of their calories at breakfast lost more than twice as much weight as those who had the majority of their calories later in the day. And for more health news, check out the 30 Weirdest Things You Do in Your Sleep.

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You might want to think twice before ditching dairy if you’re trying to lose weight—despite what your Paleo-preaching CrossFit friends tell you. Cheese is a satisfying, portable, and inexpensive food that’s packed with calcium, vitamin D, and protein. “Calcium can also promote weight loss because it helps maintain muscle mass, which boosts and helps maintain metabolism, helping you burn calories more efficiently throughout the day,” says Tanya Zuckerbrot, RD, author of The Miracle Carb Diet: Make Calories & Fat Disappear—With Fiber! That doesn’t mean you can help yourself to a cheese-drenched casserole, though. Work cheese into fiber-rich snacks to make them more satiating.

how to speed metabolism after 40

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