I've been doing research about keto diet and tried it out a couple of times. I think it's not worth it, food being more expensive and so on. I'm in a good shape, eating normal food and sometimes stuff like pizza. My glucose is excellent, I'm in a very tight control now with the current system. It's much nicer this way than I need to worry about every time I go to a restaurant (in Berlin) what kind of food they serve.