Dr. Herbert Kleber in Huffington Post

Dr. Herbert Kleber, who directs the Division on Substance Abuse at Columbia University said to NPR, "There is a growing body of evidence that shows that marijuana isn't good for the developing brain. The adolescent brain is still maturing, and teens who use marijuana are more likely to become dependent on it than adults"
Read more: http://www.huffingtonpost.com/wendy-sue-swanson-md-mbe-faap/pot-in-your-...