No lung cancer link to heavy cannabis medication

Not the Bob Marley School of Medicine?

The new findings "were against our expectations," said Donald Tashkin of the University of California at Los Angeles, a pulmonologist who has studied marijuana for 30 years. Tashkin's group at the David Geffen School of Medicine at UCLA had hypothesized that marijuana would raise the risk of cancer on the basis of earlier small human studies, lab studies of animals, and the fact that marijuana users inhale more deeply and generally hold smoke in their lungs longer than tobacco smokers -- exposing them to the dangerous chemicals for a longer time.--Marc Kaufman, Washington Post Staff Writer

Thanks to the Marijuana Policy Project.

Update, 19:02 MST: Chris Williams to be sentenced Friday.