It could still be lifestyle, whether it be the accumulation of past drug use or that having to be on the road 250 days a year takes a toll on one’s health.
Plenty of normal men die of heart attacks by 65 y/o.
I counted 27 appearance dates from January through June 2022. I’m pretty sure he was on the road maybe 50-75 days a year. Many salespeople do the same and nobody bats an eye.