Marijuana legalisation scepticism noted

There's a column at WAPO by a former pot smoker, now a research psychologist (I think), who gets annoyed by the over-simplication of debate on marijuana legalisation.

Given that's what I complain about too, there's a lot in the article that I can agree with.

One matter which is new to me, though, is this suggestion:

Recent data is even more alarming: The offspring of partying adolescents, specifically those who used THC, may be at increased risk for mental illness and addiction as a result of changes to the epigenome — even if those children are years away from being conceived. The epigenome is a record of molecular imprints of potent experiences, including cannabis exposure, that lead to persistent changes in gene expression and behavior, even across generations. Though the critical studies are only now beginning, many neuroscientists prophesize a social version of Rachel Carson’s “Silent Spring,” in which we learn we’ve burdened our heirs only generations hence.