JJ Smith is the author of the #1 national bestseller and USA TODAY bestseller Lose Weight Without Dieting or Working Out! JJ Smith is a nutritionist and certified weight-loss expert who has been featured on The Steve Harvey Show, The Montel Williams Show, and The Jamie Foxx Show and on the NBC, FOX, and CW Network television stations, as well as in the pages of Glamour, Essence, and Ladies Home Journal.