Dr. Diehl saw the amazing results of lifestyle intervention at the renowned Pritikin Longevity Center where he served as research and education director. Inspired to make better health accessible to the masses, he developed an affordable, community-based program designed to arrest and reverse society’s most common chronic diseases. Today, over 85,000 participants and clinical results published in 45 peer-reviewed scientific journals attest to the success of Dr. Diehl‘s approach. His co-authored books Health Power, the Optimal Diet Cookbook, Take Charge of Your Health, and You-Turn have been translated into 36 languages with a circulation of over two million. He is a clinical professor of Preventive Medicine at Loma Linda University and on the Board of Advisors of the American College of Lifestyle Medicine. He continues to present the science of lifestyle change with his trademark blend of humor and inspiration.