Protein is the most common concern when transitioning to a vegan diet, but it’s almost impossible to become protein deficient if you’re eating a variety of plant foods. “You’d have to try to make it happen,” says Susan Levin, RD, director of nutrition education at the Physicians Committee for Responsible Medicine (PCRM). The typical American gets twice as much daily protein as the body requires because the macronutrient is so widely available—it’s even in broccoli. And no need for specific combinations; in its most recent position on vegetarian diets, the Academy of Nutrition and Dietetics (formally the American Dietetic Association) says you don’t need to eat “complementary proteins” (for example, beans and rice) in the same meal to get the right proteins.