Over the past decade, there has been a trend toward legalizing marijuana in the US. CNN Medical Analyst Dr. Leana Wen urges recreational users and would-be users to be cautious and understand the health risks, especially for young kids and pregnant people.

As some people mark 4/20 as weed day, a day of celebration of marijuana use, I dont want to bum you out but I might.
Over the past decade, there has been a trend toward legalizing marijuana in the …