Quote Originally Posted by DataMatrix
The hairs are called "cilia", smoking cigarettes damage the cilia in the lungs. Smoking cannabis does not damage cilia. Cannabis is also an anti-cancer agent.

Hope this explained all you needed to know.

without an explanation you're just as bad as the propagandizing evil ass govt.

I know that weed actually relaxes and therefor widens bronchial passageways and therefore your lungs are able to clean themselves much easier. Also when you smoke weed it creates a basic environment as opposed to an acidic one (in which cancer can grow) so weed helps prevent cancer as well