By Joel ShannonOriginal Source: usatoday.com

Marijuana use may pose a greater risk to the developing brains of teenagers than alcohol consumption, according to a new study this week.

The analysis, published Wednesday in the American Journal of Psychiatry, found that cannabis had greater short and long-term consequences than alcohol on four key components of teens' memory. The finding greatly surprised researchers.

"We initially suspected alcohol would have a bigger effect," Patricia Conrod, lead author and professor of psychiatry at the University of Montreal told USA TODAY...click here to continue reading