Ok here is some clinical data from a scientific journal about pyschedelics (LSD and mushrooms) and mental health.
Data drawn from years 2001 to 2004 of the National Survey on Drug Use and Health consisted of 130,152 respondents, randomly selected to be representative of the adult population in the United States.
21,967 respondents (13.4% weighted) reported lifetime psychedelic use.
There were no significant associations between lifetime use of any psychedelics, lifetime use of specific psychedelics (LSD, psilocybin, mescaline, peyote), or past year use of LSD and increased rate of any of the mental health outcomes.
Rather, in several cases psychedelic use was associated with lower rate of mental health problems.
Conclusion:
We did not find use of psychedelics to be an independent risk factor for mental health problems.
http://journals.plos.org/plosone/article?id=10.1371/journal.pone.0063972