The Healthiest Diet on the Planet by John McDougal

I previously reviewed a couple of books on low-carb diets. Perhaps it is time for a dissenting opinion. Physician John McDowell argues for a low-fat vegan diet in The Healthiest Diet on the Planet.

The crux of the argument is the inversion of that made by some made by low-carb advocates, especially those who promote nearly carnivorous paleo diets. McDougall proposes that the primary diet of our ancient ancestors was plant-based, and that especially included energy-providing starches; he even refers to his picture of the ideal diet as “starchitarian.” He points to those parts of the world where people still eat their traditional diets and have low occurrence of obesity and associated diseases. They eat a lot of whole grains or potatoes along with vegetables and fruit; they eat little meat. It makes sense to me that this would be a natural diet for humans. In much of the world, foods from plants would have been much more widely available most of the year with much less effort and danger. Meat was probably a great calorie supplement to an otherwise lean diet, but it would not have been a reliable source of food for every meal, nor is it amenable to storage or preservation.

Another appealing aspect of the McDougall plan is it simplicity. In The Healthiest Diet on the Planet, he offers a green-yellow-red light approach to what to eat, what to eat with caution and what to avoid. The diet consists mainly of starchy foods: whole grains, potatoes, sweet potatoes and beans. It also includes vegetables and some fruit. Some foods, such as nuts, avocadoes and fruit juices, can be eaten in small amounts; they are a concern because they include a lot of fat or sugar. Finally, avoid animal products (meat, eggs and dairy) and extracted vegetable oils. McDougall admits that it is unusual of natural human diets to be completely devoid of meat, so I suspect it would be okay for someone to eat meat once in a while.

I haven’t tried it any more than I have tried a low-carb diet. It certainly seems easier. It is also likely to be less expensive.

Like many diet books, this one includes recipes. Coauthor Mary McDougal contributed the recipes.

McDougal, John, and Mary McDougal. The Healthiest Diet on the Planet: Why the Foods You Love—Pizza, Pancakes, Potatoes, Pasta, and More—are the Solution to Preventing Disease and Looking and Feeling Your Best. New York: HarperOne, 2016.