As this article states, researchers believe that marijuana is increasing the popularity of cancer. Smoking tobacco causes you to get lung cancer. Smoking marijuana damages the genetic material DNA in ways that could increase the risk of cancer. The more you smoke, the more your DNA will get damaged. The researchers add that the ability of cannabis only smoke marijuana to damage DNA. It has signification human health implications especially as users inhale more deeply than they do with cigarettes. This increases the respiratory burden. The scientists describe development that showed clear indications that marijuana does cause damage to your DNA. They also use a modified mass spectrometry method.