Death by Marijuana

   I wonder, as I have in the past, about the assertion that no one has ever overdosed on marijuana. Everyone says it. Everyone believes it. Or so it seems.
To me, it seems false on its face. Marijuana affects your heart, and, therefore, heart attacks can be more likely. . . .
  And, so, death by marijuana is possible. The suggestion that no one has ever died from marijuana is simply a myth.
  Searching the Internet, I find a website of Harvard Medical School that backs up what I am saying. It says the risk of a heart attack increases several times over in the hour after smoking marijuana. The website suggests that maybe this is not a significant threat to those without heart problems, but it should be a concern to those with heart disease. It says there is also some indication that an ischemic stroke is more likely to occur right after the use of marijuana. "Consistent with these links, studies by Dr. Mukamal and colleagues also suggest that marijuana smoking may increase the long-term death rate among heart attack survivors," says the online article.

https://www.health.harvard.edu/heart-health/marijuana-and-heart-health-what-you-need-to-know