My DH has been on a keto diet for 2 months. He is type 2 diabetic and went on it for health reasons. After 1 month, he went to his Dr. because he was starting to get dizzy. Doc cut one of his blood pressure meds in half and took him off one of his diabetes meds. At that point he had lost 17 lb. He went to the Dr. last week and the doc was pretty impressed with his blood test numbers. The Dr. cut his other diabetes med in half and so far DH's daily blood glucose levels are still staying stable. At this point Dh has lost 28 lbs.
This is not a diet for everyone but for some people it can revolutionize their health and life.