The ketogenic diet is a high fat, low carb, and a moderate amount of protein diet. The aim is to force the body to make the transition from burning carbohydrates for energy to burning fat for the same. In a typical keto-diet, you get to consume only 25-50 grams of carbohydrate a day. Whey is keto-friendly, especially the whey protein isolate. It has a negligible amount of sugar but provides a high amount of protein to support your activities (105), (106). With any weight loss program, there is muscle wasting and whey help preserve the muscle. Some keto-friendly products also contain whey concentrate in a ratio that doesn’t exceed the overall carb amount.