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There just isnt the same amount of data about cannabis, in part because its still illegal federally, making research a challenge
He found that out of nearly 600 confiscated vapes, one in six contained Spice and one in 100 contained THC
Patients who use smokeless tobacco have an increased risk of developing oral cancer, however, the relative risk is lower than those who smoke tobacco
However, in a subsequent study performed on 5146 infertile men, cigarette smoking was discovered to have a significant independent effect on sperm concentration but not on morphology and motility 7
You have a product that's killing half a million people a year and you put it in the same agency that regulates cancer chemotherapy drugs, you can pull one of those drugs off the market if it kills 10 people, but you can't pull a product, cigarettes, which is the leading tobacco product off the market for killing half a million people a year