David Zinczenko is Senior Vice President and Editor-in-Chief of Men's Health and Editorial Director of Women's Health. He is the author of the bestselling series Eat This, Not That! and a regular contributor to NBC's The Today Show. Zinczenko has appeared as a health expert on Oprah, The Ellen DeGeneres Show, Good Morning America, NBC Nightly News, 20/20, CNN and the Rachael Ray Show.