^
you may be in the minority. There have been way too many people that keto has worked effectively. I agree for the long run a more balanced diet is best overall but nothing gets you lean like a month or 2 of straight keto.
Some people are extremely sensitive to blood glucose swings. They get light-headed a few hours after eating even very low glycemic carbs and even the slightest elevation in blood glucose completely hampers fat loss for them and they also experience mood swings, etc. For these people, I believe that an improved version of the keto diet might be ideal. The same is probably true for the diabetics.
Personally, I don't have this problem. My pancreas work very well and my insulin receptors are very sensitive. If I eat large amounts of ice cream or other foods containing a lot of high glycemic carbs, I do get a sugar crash a few hours latter and do feel light-headed and drowsy, but the amount has to be enormous and I never get truly hypoglycemic. For me, it is much better to get most of my energy from low-glycemic carbs than fat or protein. My health is better overral than when I get my energy from fat. I feel no sugar high/low and most of my health markers are better on a medium carbs, medium protein, low fat diet. My body is more alkaline, I have much lower levels of uric acid and ammonia on my urine, lower levels of liver enzymes and a better HDL/LDL profile. My blood glucose level is better on the keto diet, but not a lot better. To make a long story short, on the keto diet one of my health markers improves slightly and all others get much worse. The cost/benefit clearly favors the higher carb, low fat diet to me.
For diabetics and other people with insulin sensitivity, an improved version of the keto diet is best. If you get hypoglycemic after eating even very low GI carbs, like cream of rye, then carbs are not for you. You will be better on a zero carb diet. However, don't do the old Atkins version of the keto diet. Instead of getting your energy from saturated fats, get it from nuts, olive oil or healthy saturated fats like those contained on coconut meat. Eat very lean meats for protein. The most important thing for those who do the keto diet is to eat vegetables since this diet puts your body in an acidic state. Carbs also put your body in an acidic state, but not as much as fats and proteins. So if you get your nergy mostly from fatand protein, you will need to eat lots of vegetalbes to alkalinize your body.
SUCKMYMUSCLE