Study: 2nd Hand Marijuana smoke damages blood vessels...

[USN_Hokie]

...worse than tobacco.

“There is widespread belief that, unlike tobacco smoke, marijuana smoke is benign,” he said. “We in public health have been telling the public to avoid secondhand tobacco smoke for years. But we don’t tell them to avoid secondhand marijuana smoke, because until now we haven’t had evidence that it can be harmful.”

The study is published in the Journal of the American Heart Association.

http://news.heart.org/secondhand-mariju ... cco-smoke/