Family physician and New York Times-bestselling author Mike Moreno believes you're only as young as your least healthy body part. In his book, The 17 Day Diet, Moreno identifies the five primary factors that age you and shares a plan to undo the damage they've caused.

One of the biggest health factors is your weight. His program, known as "The 17-Day Plan to Stop Aging" has become a weight-loss phenomenon because it includes physical and cognitive exercises, specific nutritional recommendations, and tools to help you measure success. His life-changing plan aims to help you live longer, live well, and feel young every day of your life.

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RealAge Tip
How to Lose Weight the Healthy Way