(Columbia University's Mailman School of Public Health) Illicit cannabis use and cannabis use disorders increased at a greater rate in states that passed medical marijuana laws than in other states, according to latest research. The new study is among the first to analyze the differences in cannabis use and cannabis use disorders before and after states passed medical marijuana laws, as well as differentiate between earlier and more recent periods and additionally examine selected states separately.
from EurekAlert! - Social and Behavioral Science http://ift.tt/2p4a5zQ
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