A meat eater it took him down.
I'd put that way down the list. My thought is a combo of all of these:
1. Maybe he hadn't had a physical in a while, and didn't know he was at risk
2. Toll of roids
3. A long, emotional weekend at WM
4. His general intense nature
Regardless, he leaves behind a wife and kids at just 54. Very sad. But he lived life with passion. He wrapped up issues with WWE and left this earth with no regrets ... other than leaving his kids behind ... if that thought was able to enter his head before he passed on to the other side.