If you suffer from Celiac disease or must avoid gluten for medical reasons, by all means, enjoy that gluten-free muffin. But if you’ve adopted the eating method as a way to drop pounds, think again. "A gluten-free muffin is a big sugar bomb with a huge amount of carbs and just a teeny bit of fiber and protein," Kalanick says. Ingredients like rice or corn flour are often added to gluten-free products to compensate for the missing wheat, so while the allergenic potential drops, the calorie count doesn't. Once again, you're better off sticking with whole foods found on the perimeter of your grocery store.