Harvard doc: Brain damage from marijuana proved
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With momentum building for legalization of marijuana in Mass. and across the country, some scientists say brain research should give the public cause for concern. Speaking at a Medical Development Group symposium, Dr. Bertha Madras, a professor of Psychobiology at Harvard Medical School, said research showing brain damage in habitual users who started using marijuana at a young age is "solid." Madras served as Deputy Director in the White House Office of National Drug Control Policy.