Is going on keto good for your body
 

I think, and I might be wrong, that the research on this is wanting. From what I gather, the short term effects have been studied, but the few studies for the long term have been inconsistent in their results. The consumption of fat, even if it is good fat, is what concerns some researchers. But there is also anecdotal evidence that it helps clear your head, manage diabetes, etc. (obviously there is more to add here)

It depends. It is suitable for certain individuals. It is better to consult a dietician before starting any diet.