EiTB24.com: "But cannabinoids have been shown to dial down this inflammatory response,inoids -- both those found in marijuana and the versions found naturally in the body -- Melamede explained.
Another difference between tobacco and marijuana smoking, he said, has to do with cells that line the respiratory tract. While these cells have receptors that act as docks for nicotine, similar receptors for THC and other cannabinoids have not been found.
Nicotine, Melamede said, appears to keep these cells from committing 'suicide' when they are genetically damaged, by smoking, for instance. When such cells do not kill themselves off, they are free to progress into tumours. "