I was sorry to hear about what happened to Tom Salter. Please accept my condolences also.
Do you know any more about why he had a heart attack at such a young age?
Did he have any children or siblings? Because if he did they should be checked for familial conditions that raise your risk of having a heart attack.
Also there have been rare reports of sudden heart attacks in young people after large amounts of binge drinking (especially coupled with exercise). The exact mechanism is unknown but thought to be due to spasm of the coronary arteries(the arteries that supply blood to the heart). This is compounded by smoking.
I realise this is all academic after what happened but sometimes it helps to try and know why and try to prevent it happening to someone else. At the end of the day, only the good ones get to leave this world early and get to spend longer in the next much better one. It's just not so nice on the ones that get left behind!