I was under the impression that with autophagy your body eats the loose skin and you don’t have as much loose skin as if you died it using other means. I don’t know if this is true or not but it kind of makes sense
That depends on everyone’s body type and how much excess weight they had in the first place. There is no telling. No one can answer that question. Google says 50 pounds or more, especially lost quickly, increases the likelihood.