Marijuana smoking may prevent lung cancer

Pot smokers have one less thing to be paranoid about: lung cancer.

"We hypothesized that there would be a positive association between marijuana use and lung cancer, and that the association would be more positive with heavier use," he said. "What we found instead was no association at all, and even a suggestion of some protective effect."

This from Donald Tashkin, a pulmonologist at UCLA who studied marijuana use for 30 years. An article about Tashkin's findings is available at the Washington Post's website.