This link says the seriously mentally ill die 25 years earlier than the rest of us. http://www.time.com/time/health/article/0,8599,1863220,00.html What I found curious was that this surprised people. I mean, I can count on one hand the people I've met with serious mental illness who don't smoke. Few of them actually take their medication. When they do, the meds they're on seem to have a higher rate of adverse effects than non-psych meds. (Why else can you treat every psych condition with the same drug?) They often don't have PCPs. They're often homeless, poor, addicted to drugs or alcohol, and, at a higher rate than society in general but not necessarily "often", stupid. Not to mention, lots of seriously mentally ill are actually actively trying to kill themselves. Why would you expect any other outcome? I would be curious as to what would happen if you controlled for all these variables.