Personally I think Chia Chub may have type two diabetes they aaying because of his weight that possiblty Diabetes complication
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I also read that he has ankle problems or some such.
Sometimes diabetics have to have feet/foot amputations from infections.
I don't know how it works, and it doesn't happen to every diabetic, but I've heard of complications leading from feet/foot amputations and parts of leg/legs amputations.