some people just die young/young-ish of natural causes. i personally know several people who have had freak heart attacks or brain conditions and passed away. it's sad, but a fact of life (and death).
i.e. If you already have work life balance, there's not need to stress it.
Not making an effort and letting your employees know that you don't expect them to work nights and weekends means you are ignoring the societal norms in our field and most likely have engineers working their way towards burnout.
If he wants to talk about an issue in Silicon Valley, he can do it pretty much anywhere but this one page.
That said I think his wife probably made sure he got good access to healthcare, if he didn't take the initiative himself. But it probably is somewhere between every three months and every year. Major sports players, top celebrities or Paul Atreides have the level of access that make it extremely rare, but a well connected tech executive just has a level of access that reduces the risk somewhat.
Having seen thousands of these studies I can state that many people have severe coronary artery disease at young ages (in their thirties). They are at risk for sudden death. Often they come in for the exam because a parent or sibling died prematurely either recently or at the same age as they are now.
What's interesting, in my experience, is that very often when siblings get the exam, the one with obvious risk factors such as obesity, smoking, diabetes, etc has a normal exam result and the sib with no risk factors (other than maybe sharing a bad family history) has severe disease.
Read about CCTA http://goo.gl/o1RvD5
May the family of the deceased find peace.
I wont try to speculate what actually happened out of respect for him and his family but I can assure you that he was not the standard silicon valley go hard all night type of CEO.
