This is sad news mate, but a sore and good awakening to your self as you make out.
My uncle billy believe it or not died last year aged 42 heart attack, he was a landscaper (sp) smoked roll-ups and had a bevvy at the weekend, was around 5,10 height and 12stone max.
Sometimes it dont matter about life style, but in most cases does.
Its shaken me a good bit even tho im quite fit, but like you food is a problem for me, building sites and snack bars go in toe so i cant hide from it.
Plus i was splaying football at least twice a week for 2 hours a time now thats fucked as i`ve done damage to my cartlige, 28 years old and my knees fucked, shite!!!