Keto is a no-carb diet

Carbohydrates account for about half the calories on average in the American diet. Rice, maize, and wheat provide 60 percent of the world's food energy intake, even though there are more than 50,000 edible plants.

Keto is practically no-carb, forbidding processed junk foods and severely limits grains, including whole grains, fruits, and legumes such as brown rice, apples, and lentils. Keto adherents think conventional nutritional wisdom is harmful.