Hi I am working in the mental health field Until recently many of my colleagues and myself would not place a huge debate on out patients smoking occasionally . But now physical symptoms that Mirror other medical problems are being seen . Now I am concernrd that the substance that I was taught could mimic depressive featurs if taking a lot was the only problem . I don't think this is the the worst problem we can see. I believe from my own monitoring of clients that there are many physical signs which mimic disorders such immune deficiencies