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“High holidays” are linked to increased risk of fatal traffic crashes

BMJ 2018; 360 doi: https://doi.org/10.1136/bmj.k661 (Published 12 February 2018) Cite this as: BMJ 2018;360:k661
  1. Zosia Kmietowicz
  1. BMJ

The popular American annual counterculture holiday “4/20,” which is celebrated by mass consumption of cannabis at 4 20 pm on 20 April, is associated with an increased risk of fatal traffic crashes, a study has found.1

To examine the link between cannabis use and fatal vehicle crashes, Canadian researchers looked at data from the United States National Highway Traffic Safety Administration’s fatality analysis reporting system, …

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