People dying from the body they have developed for their sport seems to happen all the time. Its usually with the guys who have gotten huge, either with mounds of muscle or fat.
I dont claim to know why this happens. But you can predict pretty acuratley who is going to leave this earth literally just by looking at them.
The dead pool articles here may seem insensitive but I look at them more as a warning. Look at PLUSA, seems almost every issue has the story of another death. Its always the same, a really decent guy, who was really huge, and almost always, relatively young.
I think its a risk you take and one that can be mitigated somewhat if after you retire you loose weight (see Dorian Yates for example) and take care of yourself in a way that promotes health. Which may not be possible while your are still in competition.
But if these heavyweights in football, powerlifting, olympiclifting and other sports dont do something about it then it will be their fate to leave this earth younger then most.
How many 70 year old 320 pounders do you know? hell I dont know any in there 60s. This is not a dig against being big just an observation. All that weight may be ok in your 20s, some times not as in this case, but at some point you gotta get leaner and start looking out for your health. If you desire longevity.