Marijuana is a harmful drug. That seems to be an unpopular opinion nowadays, but that doesn’t make the statement any less accurate. It has been linked to significant mental health problems such as depression and suicide ideation, a loss of IQ points, brain abnormalities, and a decline in cognitive functions, among other adverse effects. A recent study has even linked the drug to “heart failure and heart attacks.” Yet despite all these dangers, Ohioans approved a ballot measure Tuesday night to legalize the use of recreational marijuana in the Buckeye State.