my grandfather and my father and I look nearly identical at age. Grandfather died at 78 (heavy smoker and drinker to the end, and type A personality). Dad died at 78 (gave up drinking and smoking by the time he was 40 and went ultra healthy, also type A personality).. I figure 78 is probably the number. I drink, smoke, cuss and have unprotected sex with tattooed Haitian prostitutes, So I might be in a high risk category! But I'm not remotely a type A personality. I'm just too laid back.. If the type A is the trigger, I'm good for while, otherwise 23 more years and 78 rolls in!