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Experts warn of cardiovascular risks from chronic cannabis use, as a UC San Francisco study shows similar vascular effects to tobacco, urging caution.

A new study led by UC San Francisco researchers finds that chronic cannabis use — whether it’s smoked or consumed in edible form — is associated with significant cardiovascular risks.

A new study finds that chronic cannabis use -- whether it's smoked or consumed in edible form -- is associated with significant cardiovascular risks.

“Rats exposed to marijuana smoke with no cannabinoids at all also had vascular and cardiac impairment, plus tobacco smoke is known to cause heart disease and it has no THC,” Springer said.

If you’ve heard that smoking marijuana can treat glaucoma, we have an important tip: the rumor isn’t true. But experts at the John A. Moran Eye Center say they can direct you to the latest treatments ...