“We weren’t happy when a billboard went up saying marijuana laws reduce overdose deaths,” said Brendan Saloner of Johns Hopkins Berman Institute of Bioethics & Bloomberg School of Public Health. “That was very hard for us to rein in.”

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This small city-state could become the second country—after the United Kingdom—to explicitly legalize mitochondrial replacement therapy (MRT), a controversial assisted reproduction technique that allows women who are carriers of some rare genetic disorders to give birth to healthy babies

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The new study is perhaps the first to examine how medical marijuana laws affect public-health issues such as body weight, physical wellness and exercise. It comes at a time when many states are are trying to identify and understand the social and health impacts of marijuana legalization, which has now been enacted, in one form or another, in 23 states and the District of Columbia. With comments from our Brendan Saloner

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