I have a very serious question lol How is Trump still alive?

He's a 78 old man that is dealing with serious obesity issues, doesnt eat vegetables and has only eaten fast food for most of his life. He also does not exercise and has been known to consume drugs for the past 30 years. His drug habits being so prevalent that he's now incontinent.

How can he still be alive with no history of cardiac event?? My grandfather had a similar lifestyle and passed from a heart attack at 56 and when they did the autopsy, they found literally 5 others conditions that would have killed him beside the heart issue.