Are Vegetarian and Vegan Diets Healthy? Yes, say Nutrition Professionals! Posted on November 29, 2016 at 5:12 pm.Written by Debbie King MS RD LD The Academy of Nutrition and Dietetics current research analysis states that vegetarian and vegan diets are healthful, nutritionally adequate and may provide health benefits for all stages of the life cycle. Sports Nutrition for Vegetarians Posted on November 4, 2010 at 7:46 am.Written by Paul Whitener Jr. The Sports Nutrition for Vegetarians resource provides a supportive resource for counseling athletes who choose vegan/vegetarian diets.