[thracky]

Let's see who funded the study: (* added for emphasis) "This research received support from UK Medical Research Council Grants G0100527 and MR/K00381X/1, US National Institute on Aging Grant AG032282, US National Institute of Mental Health Grant MH077874, and US National Institute on Drug Abuse* Grant P30 DA023026. Additional support was provided by the Jacobs Foundation."

I agree adolescents probably shouldn't partake, but for adults, there's far worse things.