Marijuana (IMAGE) Penn State Caption Marijuana use in teenagers is on the rise, while cigarette and alcohol use are stable or declining, according to health statistics researchers. In particular, black teens are using more marijuana than in recent decades. Credit Penn State Usage Restrictions non commercial use only License Licensed content Disclaimer: AAAS and EurekAlert! are not responsible for the accuracy of news releases posted to EurekAlert! by contributing institutions or for the use of any information through the EurekAlert system.