John McDougall

John A. McDougall (born May 17, 1947) is an American physician and author. He has written a number of diet books advocating the consumption of a low-fat vegan diet based on starchy foods and vegetables.

His eponymous diet, called The McDougall Plan was a New York Times bestseller. It has been categorized as a low-fat fad diet. The diet rejects all animal products as well as cooking oils, processed food, alcoholic beverages and caffeinated drinks. As with any restrictive high-fiber diet, it may lead to flatulence, possibly poor mineral absorption from excess fiber, and limited food choices that may lead to a feeling of deprivation.