I dont think it has actually been proven that it kills cancerous cells. I mean chemists have been trying for years and years to find a compound that does. I think if THC was this magical the scientists would be able to use it to virtually eliminate all cancerous cells in a person.

THC cancels out the effect that tar has on cells, I dont beleive this. It isnt possible for it to be that straight forward.

I think weed is as good as the next person I just think that it isnt possible that cannabis smoke cannot cause cancer.