Jean Clemente (the oldest human ever) smoked cigarettes (she didn't inhale) and ate pounds of chocolate at a time. The oldest Canadian woman ever smoked until she was in her 90s (she lived to be 116), and plenty of other people who lived to be 100 also had ridiculously unhealthy lifestyles but still lived long.

For Trump, his father lived to be in his 90s. His grandfather died younger because he was a victim of the Spanish Flu in 1918. We don't know how long he will live, sadly. But I hope he will die of natural causes soon.