The diet that best prevents disease, best supports the body’s innate healing mechanisms, and best promotes sustained weight loss is a low-fat diet based on starches, with added vegetables and fruits, and with no animal products or free oils (like olive or corn oil).

— Dr. McDougall



Dr. McDougall (John A. McDougall) is a physician and nutrition expert with over 30 years of experience in treating disease with diet. He has written several books, including The Starch Solution, to make the all-important dietary information accessible to all.

In the introduction of The Starch Solution, Dr. McDougall mentions that as he child he was basically eating an animal-based diet. Bacon, eggs, beef, pork, chicken, butter and milk were all a prominent part of his diet.

He had frequent stomachaches, constipation, colds and flu’s. He was also overweight. At age 18, Dr. McDougall suffered from a stroke.

At the time he didn’t realize the impact that diet can have on health. No wonder, because no one was telling him that there was such a thing as diet that is bad for health.

After not receiving satisfactory answers as to why he had suffered a stroke, Dr. McDougall walked out of the hospital (against medical advice). He pursued a career in medicine with great passion, determination and a fierce sense of direction.

During his studies, Dr. McDougall went for an internship to Queen’s Medical Centre in Honolulu. There he was (initially) left frustrated at not being able to help patients who were suffering from chronic illnesses such as obesity, diabetes, heart disease and arthritis. However, he did make a different observation which caused a breakthrough in his understanding of disease.

Dr. McDougall noticed a significant pattern when he observed the immigrant people living on the sugar plantations in Honolulu. The elderly people were healthy, slim and active. They were free from diseases such as diabetes, heart disease, arthritis and cancer.

Their children were not as healthy and were a little heavier, but the youngest generation did have a lot of health problems. How was that possible?

Carefully studying the lives of these families, including lifestyle, work environment and behavior, Dr. McDougall noticed that the elderly immigrants (from China, Japan, Korea and the Philippines) had remained true to the diet they had been brought up with, whereas the younger generations had adopted the Western diet.

The elderly people were eating a diet based on rice and vegetables, whereas the younger generations were eating a diet based on meat, dairy and processed foods.

Over and over, Dr. McDougall saw the same pattern repeating: Those people centering their diets around meat and dairy got sicker, while those people focusing their diets on grains, fruits and vegetables, remained healthy.

He found the insight he was searching for: In all likelihood, the stroke he had suffered from at an unusually young age was due to the animal-based diet.

Continued research and observation led Dr. McDougall to see that there was a worldwide phenomenon going on and that diet indeed, was the missing ingredient in human health. He also found that others had made the same discovery, that “potatoes, corn, and whole grains led to robust health, while meat and dairy led to persistent, life-threatening diseases.”

Dr. McDougall went through stacks of medical journals in which the link between diet and disease was made. He found out that the right diet can not only prevent disease from occurring. Diseases can also be reversed when people stop eating meat, dairy, oil and refined foods.

The studies were consistent and showed that obesity, chest pain, headaches, arthritis, kidney disease, heart disease, Type 2 diabetes, intestinal distress, asthma and other diseases can be reversed by healthy eating.

These simple insights put Dr. McDougall onto a different course for treating his patients. Over time, Dr. McDougall, along with his wife Mary, successfully set up the McDougall Program, which is centered around a starch-based diet.

First in St. Helena’s Hospital in California, but in 2002, after realizing that a hospital may not be the best location for a program focused on diet, Dr. McDougall decided to conduct 10-day McDougall programs in California.

This program has had great success. His dietary recommendation allows patients to go off their medications, avoid risky surgeries and regain their health and strength. Thousands of people have achieved significant weight loss, lowering of cholesterol levels and disease prevention and reversal by adopting a starch-based diet.

The Starch Solution and the website contain information, recipes, patient’ stories of recovery and more inspiration. Dr. McDougall is also the author of several other books including The McDougall Program for Maximum Weight loss, The Healthiest Diet on the Planet and The McDougall Quick & Easy Cookbook. The section on dietary recommendations discusses a starch-based diet is and how it is slightly different (in emphasis) from a whole food plant-based. In our view, they are not contradictory. is a participant in the Amazon Services LLC Associates Program, an affiliate advertising program designed to provide a means for sites to earn advertising fees by advertising and linking to If you are buying a product using an Amazon link on we will receive a small commission that will help support this site.

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