Myths and facts about using cannabis to treat health problems

There’s … substantial evidence that [cannabis] may ease nausea and vomiting associated with chemotherapy and may help control muscle spasms from multiple sclerosis, according to a 2017 report from the National Academies of Sciences, Engineering and Medicine.

[W]e still have much to learn about the right dosages, which vary from person to person and can change over time, as well as the efficacy of cannabis compared with other treatments, says Erin Bonar, a professor of psychiatry at Michigan Medicine of the University of Michigan at Ann Arbor.

Some doctors say that cannabis is a safer way to manage chronic pain than powerful, potentially addictive opioid drugs. But about 21 percent of regular users develop cannabis use disorder ….

And higher doses can elevate heart rate and increase blood pressure … which may raise heart attack and stroke risks, especially in people who already have heart disease.

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