I've seen coworkers die in their 30s, 40s and 50s from cancers and heart attacks. Can concur.
It wasn't the corpse that got me, but the briefcase. It talked tales of ambition and a future and suddenly there was none of all that. Heart attack, according to the 5 lines he made in the local newspaper the next day. I can still see that briefcase. It's a good reminder.