The only way he could have gotten that weight off that fast is with an intestinal bypass.
Uncontrolled diabetic or pancreatic dysfunction would do it as well.
If he actually lost that weight through discipline and exercise, I would actually be impressed with that aspect of Sharpton. Sometimes, it can be done. I’ve seen some friends “scared straight” by doctors who told them they had five years left without radical change.
He should write a book about how he did it - it would probably pay off his tax debt.
Don’t get me wrong - the guy is STILL a opportunistic leech.