Next in the six part series, Shivam Joshi, MD discusses how the keto diet has swept the country with promises of diabetes reversal and weight loss. Is this too good to be true? For those who are unaware, the keto, or ketogenic, diet excludes all carbohydrates to the point that the body derives energy from another macronutrient: fats. Let food be thy medicine, but not if you need actual medicine to support thy food.