Multiple Risk-Behavior Profiles of Smokers With Serious Mental Illness Stanford University Medicine Professional Individuals with serious mental illness (SMI) are dying on average 25 years prematurely. The leading causes are chronic preventable diseases. […]To view the full video. Subscribe to Faculti Subscription – Psychology or Faculti Subscription – Medicine after registering here to view this video. Or sign-in here if you are already a Faculti member.