New Scientific Insights to Prevent Obesity, Reverse Diabetes & Survive Cancer

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Dr. John on Health Latest Blog Posts

March 7, 2025

Dr. John Poothullil discusses connection between lifestyle diseases and eating habits.

February 28, 2025

Dr. John Poothullil discuss the meaning of hunger. when to stop eating and recognizing the underlying causes can help us maintain healthier eating habits. This blog post combines insights on how to listen to your body when it’s time to stop eating, alongside the physiological reasons behind hunger.

February 18, 2025

Dr. John Poothullil discusses when to stop eating and how that can improve our overall well-being.

Dr. John Poothullil's new book

Welcome to ‘Beat Unwanted Weight Gain: 7 Ways to Lose Pounds and Never Regain Them.

Whether you’re struggling to shed extra pounds or aiming to maintain a healthy weight, this book offers a science-backed approach to sustainable weight loss without relying on diets, fads, or weight-loss drugs.

Discover how understanding your body’s natural hunger and satiation signals, making informed food choices, and reducing dependency on grain-based carbohydrates can empower you to take control of your health.

Meet Dr. John On Health – Founder

John Poothullill practiced medicine as a pediatrician and allergist for more than 30 years, with 27 of those years in the state of Texas. He received his medical degree from the University of Kerala, India in 1968, after which he did two years of medical residency in Washington, DC and Phoenix, AZ and two years of fellowship, one in Milwaukee, Wisconsin and the other in Ontario, Canada.

He began his practice in 1974 and retired in 2008. He holds certifications from the American Board of Pediatrics, The American Board of Allergy & Immunology, and the Canadian Board of Pediatrics.

Dr. Poothullil has written articles on hunger and satiation, weight loss, diabetes, and the senses of taste and smell. His articles have been published in medical journals such as Physiology and Behavior, Neuroscience and Biobehavioral Reviews, Journal of Women’s Health, Journal of Applied Research, Nutrition, and Nutritional Neuroscience. His work has been quoted in Woman’s Day, Fitness, Red Book and Woman’s World.

Dr. John Poothullil photo

Dr. John On Health Featured Books

Diabetes: The Real Cause and The Right Cure: 8 Steps to Reverse Type 2 Diabetes in 8 Weeks

Unravel the Secrets to Reversing Type 2 Diabetes. Dr. John Poothullil reveals the true cause behind type 2 diabetes and provides a groundbreaking 8-step approach to reverse this chronic condition.

Your Health Is at Risk: How to Navigate Information Chaos to Prevent Lifestyle Diseases

In today’s information age, distinguishing between reliable health advice and misleading misinformation is crucial. Learn to navigate the Maze of Health Information with Dr. John Poothullil’s Eye-Opening Book.

Eat, Chew, Live: 4 Revolutionary Ideas to Prevent Diabetes, Lose Weight and Enjoy Food

Unlock the Power of Nutrition to Control Type 2 Diabetes. Dive into Dr. John Poothullil’s comprehensive guide on how to eat right and gain control over type 2 diabetes. 

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