Patients at risk for heart problems should be cautious about using marijuana CNNMarijuana is risky for people taking common heart medications NBC NewsResearch Finds Possible Dangerous Link Between Marijuana Use & Heart Problems CBS MiamiMore than two million patients with heart disease report use of marijuana Medical Xpress2 million people with heart disease report using marijuana, Brigham and Women’s doctors find in new study The Boston GlobeView full coverage on Google News