Best friend since 2nd grade told me this week that a couple months ago he was diagnosed with emphysema. He's 24, been smoking heavily since he was 14. That, along with his asthma is what did it. He says when he turns 25 in September that he's gonna quit, but I don't think he knows how hard it's gonna be. Doctors said that if he continues smoking as he has been, he'll be dead in 2 years.