Pubdate: Fri, 25 Sep 2015 Source: Baltimore Sun (MD) Copyright: 2015 The Baltimore Sun Company Contact: http://www.baltimoresun.com/ Details: http://www.mapinc.org/media/37 Author: Stephanie Nickerson MARIJUANA IS NOT HARMLESS A word of caution for readers of Dan Rodricks' column ("'Normalization' of marijuana doesn't necessarily mean wider use," Sept. 17). Continued vigilance in communicating and educating young people about the health effects of heavy marijuana use is critical. This is especially important since fewer adolescents now perceive marijuana as harmful. The University of Michigan's Monitoring the Future Study 2014 reports that just about one-third of high school seniors believe marijuana can be harmful to health, down from 52.4 percent. Lower perception of risk may indicate higher usage in subsequent years. Indeed, the newest volume of this same study reports that daily or near-daily marijuana use by college students is at its highest rate since 1980. Because their brains are not fully developed until around age 25, young people are at increased risk of abuse, dependence and serious health consequences. In fact, one in 11 users will become addicted, and that number increases to 25 to 50 percent with daily use, according to the National Institute on Drug Abuse. Heavy and continuous use of today's potent pot can lead to long-term memory loss, reduced IQ, schizophrenia, psychosis and depression. Mr. Rodricks is correct: Marijuana is not harmless, especially for young people. Parents have a significant impact on their children's behavior and attitudes, including whether to use drugs. I encourage parents to learn the facts and talk with their children. Education is the key to making smart decisions. Stephanie Nickerson, Falls Church, Va. The writer is executive director of the Marijuana Science Forum. - --- MAP posted-by: Jay Bergstrom