The Raw Food Diet traces back to the late 1800s, when Maximilian Bircher-Benner, a doctor, discovered he could cure his own jaundice by eating raw apples. Thus began a series of experiments testing the effects of raw food on human health, and the diet has continued to evolve. While there are numerous variations of the raw food diet today, it typically involves food that hasn’t been cooked, processed, microwaved, irradiated, genetically engineered or exposed to pesticides or herbicides. About 75% to 80% of what raw foodists eat each day will be plant-based foods never heated above 115 degrees Fahrenheit. (Very few people follow a 100% raw diet.) Most followers are vegan, but some choose to consume raw animal products, such as raw (unpasteurized) milk, cheese made from raw milk, sashimi, raw fish and certain kinds of raw meat. Proponents say cooking obliterates most of the vitamins in food and nearly all of the immune-boosting plant nutrients (though scientific evidence to support these claims is lacking). Most who follow the plan consume only half the calories they would eat on a cooked diet — just one of the reasons this low-calorie plan isn’t a great idea in nutrition pros’ minds