Potent Pot: Marijuana Is Stronger Now Than It Was 20 Years Ago

When the researchers looked at the ratio of THC to CBD, they found that marijuana in 1995 had a THC level that was 14 times its CBD level. "We can see that the ratio of THC to CBD has really, really increased and climbed so much higher," said lead study author Mahmoud A. ElSohly, a professor of pharmaceutics at the University of Mississippi. The researchers also found that, among the cannabis plant material seized over the last four years of the study, there had been an increase in the samples o