Developed by George Ohsawa in the early 1960s. Based on the misconception that human diseases were unnecessary and could be prevented by diets consisting of unpolished brown rice. Some of the diets included some kinds of vegetables. Nutritionists claim that strict adherence to the Zen diets will result in severe malnutrition in the form of scurvy, anemia, hypoproteinemia, and emaciation.
A diet that is based on brown rice and can be deficient in a number of essential nutrients.