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however, cannabis detection windows in these matrices are relatively short for less-than-daily cannabis smokers, increasing impairment probability following a positive test

This had no impact on the peer review process and the final decision

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Tobacco use also causes bleeding gums (gum disease) and cancer

"Earliest evidence for human use of tobacco in the Pleistocene Americas" (PDF)

Cutting-Edge Insights on Nicotine and the Brain Recent research has uncovered several ways nicotine interacts with the brain that expand our understanding of addiction, from long-lasting genetic effects to the unique vulnerabilities of the adolescent brain