About 33% of high school students had used cannabis and 24% also had used cannabis concentrates, according to a new study of 47,142 students in eighth, 10th and 12th grades in Arizona, where medical marijuana is legal. Cannabis concentrates have high levels of psychoactive chemicals.

About 33% of high school students had used cannabis and 24% also had used cannabis concentrates, according to a new study of 47,142 students in eighth, 10th and 12th grades in Arizona, where medical marijuana is legal. Cannabis concentrates have high levels of psychoactive chemicals.: https://ift.tt/2ME4WLQ Read more... https://ift.tt/2Pfi642