Go to a book store, go to the diet section. Count how many Keto books there are compared to other traditional PROVEN diets...In fact I challenge you to find more then a few books that aren't about Keto.
Don't fall into the trap of Keto my friend, it's nothing but a sham to sell products. You will not hear about Keto again next year, it's 2018's fad diet. High fat low carb isn't good at all. 99%+ of people doing Keto will never get their body into Ketosis.
If you're body building go for the traditional diets, not a fad diet. You seem pretty serious about your body so do what's tried and true.
Yes. When your body is in a ketogenic state. Your metabolism will change so you are not as hungry and when you do eat you will eat less. Your body is getting its energy/calories by burning the fat that is stored. I use a ganoderma coffee blended with irish butter and MCT oil. Walk 20-30 minutes a day. It works for me and my wife. If you want the recipe let me know. Also I want to try Japanese wieght loss pills bio-japan.net/supplements/weight-loss-drugs/ quite interesting thing. I liked that their pills based only on natural ingredients of vegetable origin and seafood origin.