Trans fats, which are typically found in processed foods with partially hydrogenated oils, should be avoided when buying, cooking, or ordering food because of the role they play in weight gain. As noted in the journal Obesity, these unhealthy substances have been found to pack on the belly fat in monkeys. As it turns out, they’re not great for humans either. “Trans fats cause inflammation in the body leading to insulin resistance and impairing the body’s ability to use glucose properly, resulting in excess fat storage around the belly,” says Tina Marinaccio, MS RD CPT in 50 Ways to Shrink Your Belly. Trans fats, which are created by partially hydrogenating vegetable oils, are beloved by manufacturers because they increase the shelf life of processed foods, but they are no friend to your waistline. “Trans fats may be lurking in any processed or fried food such as chips, baked goods, and even butter spreads,”Marinaccio warns.”To avoid them, check the ingredients for hydrogenated or partially hydrogenated oils.”
We're big fans of the "everything in moderation" mantra, but it's important to remember that just because a weight-loss strategy works for one group of people doesn't mean it's the best plan for you. If you typically have trouble stopping after just one sweet treat, you're better off skipping this slim-down strategy to avoid undoing any progress you've already made.