So he has outlived his two brothers. I don’t believe that his parents were as obese as he is and therefore I’m not sure that their ages are much indication of how long Trump might have left.If family are anything to go by...
Donald Trump is currently 79-years-old.
His father died aged 93.
His mother died aged 88.
His eldest sister Maryanne Trump Barry died aged 86.
His brother Fred Crist Trump Jr died aged 42 (heart attack, alcoholism).
His older sister Elizabeth Trump Grau, living, aged approx 83-years-old.
His younger brother Robert Trump, died aged 71.
He's probably got a few years left in him.
Unless another would-be assassin strikes lucky.