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It’s remarkable how much truly bad science is related to marijuana research. The latest is this: Evaluation of the DNA damaging potential of cannabis cigarette smoke by the determination of acetaldehyde derived N2-ethyl-2′-deoxyguanosine adducts by Singh R, Sandhu J, Kaur B, Juren T, Steward WP, SegerbÉck D, Farmer PB In conclusion, these results provide evidence for the DNA damaging potential of cannabis smoke, implying that the consumption of cannabis cigarettes may be detrimental to human health with the possibility to initiate cancer development. The mere fact that they are implying negative possibilities about cannabis consumption in a scientific abstract makes it science by press release, which is, by definition, bad science. Researchers at the University of Leicester in England have found “convincing evidence” that pot smoke damages DNA in ways that could potentially increase the risk of cancer. Paul Armentano does a nice job of taking down the Fox article. Just for the record, in 2006, Tashkin led the largest population case-control study (yes, Dr. Tashkin actually performed research on humans, not ‘calf thymus DNA‰) ever to assess the use of marijuana and lung cancer risk. The study, which included more than 2,200 subjects (1,212 cases and 1,040 controls), reported that marijuana smoking was not positively associated with cancers of the lung or upper aerodigestive tract — even among individuals who reported smoking more than 22,000 joints during their lifetime. It happens every time. |
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