Many consumers feel pride in avoiding the glazed pastries in the supermarket and instead opting for "all natural" granola that comes packed with extra protein. Same goes for low-fat yogurts "made with real fruit," "organic" plant-based milks and bottled "superfood" smoothies. Buyer beware: Healthy grocery buzzwords like those often cover up an unhealthy amount of sugar. Added sugars are difficult to quickly spot because many companies use clever marketing to distract consumers, said Nicole Avena, a professor of neuroscience and psychiatry at Mount Sinai Medical School and Princeton University who has studied added sugars. Avena said while some health-forward brands know people are starting to become aware of the hazards of added sugars, "a lot of the bigger brands don't worry so much about people's health." Here's how to spot hidden sugars and what to do about it.