Heavy weed use may be far more dangerous than people realize, according to a pair of studies published in JAMA Network Open.

The new observational study, published Tuesday in the journal JAMA Network Open, cannot prove that cannabis harms ... according to the US Centers for Disease Control and Prevention.

Both men, based in Rochester, shared a love of "Mary Jane" and cultivated their own cannabis plants for ... according to the U.S. Centers for Disease Control and Prevention (CDC).