My Sister in Laws mom died at 86, she weighed 4-500lbs for 40 years I knew her. My grandmother weighed 300 plus or minus even in pictures from the 19 teens, she lived to 96 and with my family. She was sharp as a tack too.
Well OK if you say so, but that’s probably not the way to bet.
300 pounds, there’s not much quality of life, when simply putting on shoes is an ordeal. (Which they probably don’t, because they ain’t goin’ anywhere anyway.)
My step grandmother was obese, in a wheelchair, partial amputation on one leg, blind, deaf, and prone to confusion. In a nursing home. That ain’t no way to live, and that ain’t no way to die.