The specialist said that they thought the artery most likely had a small area of roughness that bits of blood particles had caught on and accumulated to block it. They ruled out cholesterol. There was no fat around the heart, and no indication anywhere else of cholesterol in the arteries or heart. There is no genetic factor (known) in the family. I don't (have never) smoke, don't drink much (not at the games, nor when I am out on my bike or driving). No high or low blood pressure. Heart rate prior to this was normal (resting rate was around 55 for example) and (despite my shape) I swam and went to the gym each week. I am not stressed, nor do I get much stressed (critical for a Wasps fan). All in all, a very low risk for a heart attack. But, it's all about numbers. Low risk is not no risk.
And the sheep thing is a scurrilous rumour.
That's quite chastening - as I can match all of that.....ancient relatives, never smoked etc. and recent days in hospital for hip - all my vital signs were "text book" according to my consultant (BP etc)
I will look towards improving fitness as hip allows (cycling!) and losing the weight put on by not being able to exercise for 18 months
Whilst not wishing such matters on anyone - its a helpful wake up call for all of us!
Good luck with the recovery - the medics amongst us will no doubt be better informed than an old physiology grad...but I guess if it was "mechanical", once "stented" you should have a more than decent chance of being in the clear going forwards - but they've not taken any chances with the drug regime!