https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3747247/ "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."
Now everyone agrees 16 yr olds shouldn't be abusing any psychoactive drugs while their brain is still developing, but don't ruin it for us adults, it is an important part of the human experience (though it isn't for everyone, since for psychedelics, expanding the way you view life is generally the end goal.)