With a THC concentration of up to 10 times higher today than that which was found in marijuana in the 1960s, cannabis has been shown to have particularly damaging effects on brain development in adolescents.
With a THC concentration of up to 10 times higher today than that which was found in marijuana in the 1960s, cannabis has been shown to have particularly damaging effects on brain development in adolescents.
With a THC concentration of up...