Dr. Dean Ornish is a well-known physician and researcher who is the founder of the nonprofit Preventive Medicine Research Institute. He is known for his research on the effects of diet and lifestyle changes on heart disease and has authored several bestselling books on the topic.
Dr. Michael Greger is a physician, author, and speaker who is best known for his advocacy of plant-based diets. He is the founder of the website NutritionFacts.org and the author of the bestselling book "How Not to Die," which discusses the role of diet in preventing and reversing chronic diseases.
Jillian Michaels is a personal trainer, author, and television personality who gained fame as a trainer on the reality TV show "The Biggest Loser." She has since become a bestselling author and has created numerous fitness and diet programs, including the "30 Day Shred" and "Body Revolution."
Dr. Mark Hyman is a physician and bestselling author who focuses on functional medicine and the role of diet in health. He is the founder of the UltraWellness Center and has written several books, including "The Blood Sugar Solution" and "Food: What the Heck Should I Eat?"
Rocco DiSpirito is a celebrity chef, author, and television personality who is known for his focus on healthy cooking and weight loss. He has appeared on several cooking shows and has written numerous cookbooks, including "Now Eat This!" and "The Pound a Day Diet."
Dr. David Ludwig is a physician and researcher who is known for his work on obesity and weight loss. He is the director of the New Balance Foundation Obesity Prevention Center at Boston Children's Hospital and has authored several books, including "Always Hungry?"
Tosca Reno is a fitness model, author, and motivational speaker who is known for her advocacy of clean eating and fitness. She gained fame with her "Eat-Clean Diet" books and has since written numerous other books on health, wellness, and weight loss.
Dr. Jason Fung is a nephrologist and author who is known for his advocacy of intermittent fasting and low-carbohydrate diets for weight loss and metabolic health. He is the author of several books, including "The Obesity Code" and "The Complete Guide to Fasting."
Joy Bauer is a registered dietitian, author, and television personality who is best known for her role as the nutrition expert on the NBC show "Today." She has written several bestselling books on nutrition and weight loss and is the founder of Joy Bauer Nutrition.
Dr. Robert Lustig is a pediatric endocrinologist and author who is known for his research on the effects of sugar on health. He gained fame with his viral lecture "Sugar: The Bitter Truth" and has written several books, including "Fat Chance" and "The Hacking of the American Mind."