Kimberly A. Tessmer, R.D., L.D., is the author of The Everything Nutrition Book and Gluten Free for a Healthy Life. A registered dietitian and freelance writer who currently owns and operates Nutrition Focus, a consulting practice for nutrition and weight loss, she has served as the National Corporate Dietitian for three major weight loss companies as well as Foodservice Manager and Dietetic Technician at several hospitals. Ms. Tessmer, who lives in Parma, OH, is a member of the American Dietetic Association and the ADA Practice Group "Nutrition Entrepreneurs."