279photo Studio/Shutterstock

Myth: Eating fat will make you fat

It won’t—and it will actually help you burn more fat and lose weight. Of course, that’s only if you’re eating unsaturated fats (both monounsaturated and polyunsaturated) and ones that have omega-3s. According to Livestrong, some studies have shown that people who consume more unsaturated fatty acids have lower BMIs and less abdominal fat, while others indicate that good fat can boost your metabolism. Fat can also keep you full longer and help you build muscle. So make sure to incorporate avocados, olive oil, fish, and nuts into your diet. But Dr. Greuner cautions, “Realize what proper serving sizes are for all your foods. For example, the proper serving size of an avocado is one-fourth of the avocado. Think of that next time you add guac to your Chipotle!”