Bauer, Joy: - Joy Bauer, MS, RDN, CDN, is one of the nation's leading health authorities. She is the nutrition and healthy lifestyle expert for NBC's TODAYShow and the host of NBC's Health + Happiness. Bauer is also a monthly columnist for Woman's Day magazine, the official nutritionist for the New York City Ballet, and the creator of JoyBauer.com. Bauer is a #1 New York Times bestselling author with more than a dozen bestsellers to her credit.