Dr. Eric Westman is one of the most influential physicians in the modern low-carbohydrate and ketogenic nutrition movement. For more than two decades, Dr. Westman has researched and clinically applied low-carbohydrate and ketogenic diets for obesity, type 2 diabetes, insulin resistance, metabolic syndrome, PCOS, fatty liver disease, GERD, and related chronic metabolic conditions. He is widely respected because he combines academic research with real-world clinical implementation, helping thousands of patients improve or even reverse metabolic disease through dietary carbohydrate restriction. He is the author or co-author of bestselling books including End Your Carb Confusion, Keto Clarity, Cholesterol Clarity, and The New Atkins for a New You.

Dr. Tim Noakes is an emeritus professor of exercise science and sports medicine at the University of Cape Town and one of the most influential, controversial figures in modern nutrition. A medical doctor, A1 NRF-rated scientist, and author of more than 750 peer-reviewed papers, he ran 70-plus marathons and ultra-marathons and developed the central governor theory of fatigue. After his father died of type 2 diabetes and Prof. Noakes was diagnosed himself, he reversed 33 years of high-carb dogma and co-authored The Real Meal Revolution, Lore of Nutrition, and Real Food on Trial. In 2017 and 2018 he faced a five-year medical misconduct trial for tweeting low-carb advice to mothers and was found not guilty on all 13 charges, setting the legal precedent that no doctor can be silenced for prescribing this way of eating.

Dr. David Unwin is a British family physician based in Southport, England, widely recognized as one of the world's leading pioneers using low-carbohydrate nutrition to achieve remission of type 2 diabetes and prediabetes. He's worked in the UK's National Health Service since 1986, caring for a general practice population of 10,000 patients. After 25 years of conventional drug-first treatment, he shifted his approach in 2012-13 toward carbohydrate restriction after a single patient achieved drug-free remission and confronted him about it. He's the RCGP National Champion for Collaborative Care in Obesity and Diabetes, NHS Innovator of the Year (2016), and the creator of the famous "teaspoons of sugar" infographics that have been downloaded millions of times and translated into 35 languages.

Dr. Zoe Harcombe is a British nutrition researcher, author, and one of the most recognized independent critics of modern dietary guidelines in the low-carb and metabolic health world. After a first career in senior corporate HR roles at Mars, GlaxoSmithKline, and the Welsh Development Agency, she left in 2009 to focus full-time on nutrition research and obesity. She is the author of The Obesity Epidemic: What Caused It & How Can We Stop It, Stop Counting Calories & Start Losing Weight, the Harcombe Diet series, and writes a weekly Monday note dissecting peer-reviewed nutrition studies (now nearing 780 papers torn apart).

Dr. Mariela Glandt, MD is a Harvard- and Columbia-trained endocrinologist with over 20 years of clinical experience. From 2015 to 2024 she was the Founder and Medical Director of the Glandt Center for Diabetes Care focused on innovative approaches to diabetes reversal, with a strong emphasis on metabolic health and lifestyle-based interventions. Today she is the CEO of OwnaHealth, a virtual clinic designed to reverse chronic conditions like Type 2 Diabetes and obesity in underserved populations. It uses nutritional ketosis, doctor-led care, and AI-optimized coaching to help patients take back control of their health, while decreasing the use of medications.

Dr. Andrew P. Koutnik is a research scientist, educator, and internationally recognized expert in metabolic health, nutrition, human performance, and type 1 diabetes. He earned his PhD in medical science from the University of South Florida, Morsani College of Medicine, and has worked with Harvard Medical, Johns Hopkins, NASA, the U.S. Department of Defense, and the Samsung Diabetes Research Institute. He has contributed to more than 100 scientific publications and presentations, with a focus on type 1 diabetes, obesity, insulin resistance, metabolic flexibility, ketones, and cardiometabolic health. He has personally lived with type 1 diabetes for nearly two decades, giving him a rare blend of scientific expertise and lived experience.

Dr. Amie Hornaman is a Doctor of Clinical Nutrition and leading functional medicine practitioner specializing in thyroid, hormone, and metabolic health, widely known as "The Thyroid Fixer." She is the founder and CEO of the Better Thyroid and Hormone Institute, a telehealth practice serving patients across all 50 states. With over two decades of clinical experience, she developed the F.I.X.E.R. Method, a comprehensive approach to addressing thyroid function, hormone imbalance, weight gain, and metabolic issues. She's also host of the globally ranked podcast The Thyroid Fixer and creator of the Fixxr supplement line.

Dr. Mark Cucuzzella is a family physician, professor at West Virginia University School of Medicine, and a diplomate of the American Board of Obesity Medicine. A retired U.S. Air Force lieutenant colonel and flight surgeon, he developed the Air Force Efficient Running Program and is widely recognized for his work in metabolic health, diabetes prevention, low-carbohydrate nutrition, and exercise physiology. He's also one of the world's better-known physician athletes, with more than 100 marathons and ultra-marathons completed and a sub-three-hour marathon streak spanning decades. He's the author of Run for Your Life.

Shanna Hussin is a registered dietitian, metabolic health educator, author, and host of the Optimal Metabolism podcast with 26 years in the field. Conventionally trained but conventionally disillusioned, she left mainstream dietetics after watching compliant patients get sicker and after her own son's ulcerative colitis diagnosis forced her to look outside the standard of care. Today she focuses on insulin resistance, fatty liver disease, blood sugar dysfunction, intermittent fasting, circadian rhythm, and cortisol regulation, the upstream drivers behind pre-diabetes, type 2 diabetes, PCOS, obesity, hypertension, high triglycerides, and chronic fatigue. She's the author of Fast to Heal and runs a 90-day insulin resistance reset.

Michelle Hurn is a registered and licensed dietitian, ultra-endurance athlete, speaker, and author who became a leading voice in the low-carb, ketogenic, and carnivore nutrition world after spending years inside the traditional dietetic system. A founding board member of the American Diabetes Society, she completed her dietetics degree at Kansas State University and her clinical internship at Oregon Health Science University. She is the author of The Dietitian's Dilemma, which documents the conflicts she encountered inside modern dietetics education and clinical practice, and works clinically with Dr. Mariela Glandt at Ona Health treating severe type 2 diabetes with therapeutic carbohydrate restriction.

Kelly Hogan is one of the most recognized long-term voices in the carnivore and zero-carb movement. After reaching ~262 pounds in her mid-20s and battling recurring boils, chronic acne, costochondritis, IBS, amenorrhea, and nighttime anxiety, a physician put her on an animal-products-only protocol in November 2004. She lost roughly 130 pounds, kept it off for two decades, had three carnivore pregnancies, and breastfed for five years on zero carbs. Founder of My Zero Carb Life, Kelly now coaches thousands through eight live group classes a week, a 260-page handbook, and a YouTube channel with a Silver Play Button on the wall behind her.