Occasional stoners rejoice!
A 20-year study has revealed that smoking marijuana once or twice a week doesn't hurt the lungs.
Smoking once or twice a day, however, is a different story.
Although there weren't enough heavy users among the 5,000 young adults involved to draw firm conclusions, this large-scale study determined using marijuana that often might cause a decline in lung function.
Similar studies into marijuana use have yet to find a link between smoking the drug and lung cancer.
The effects of pot seem to be much less dangerous than tobacco, but researchers at the University of California, San Francisco, and the University of Alabama at Birmingham recommended "caution and moderation when marijuana use is considered."
We'd like to echo that sentiment. It's still an illegal drug and can still impair your judgement. Smoke at your own risk!
[Image via AP Images.]