Access

News

Nature Medicine 12, 1335 (1 December 2006) | doi:10.1038/nm1206-1335b

US marijuana laws clamping the lid on pot research

Brian Vastag

A decade after California became the first US state to legalize medical marijuana, one small survey estimates that doctors have recommended the drug to about 350,000 patients. But continuous legal wrangling with the federal government has scared researchers away from tapping into this vast pool to understand how the drug works.