One of our very first Freakonomics Radio podcasts focused on brain trauma among NFL players. Writing for Vice, David Bienenstock argues that NFL players might benefit hugely from medical marijuana. He points to an editorial in the Washington Post earlier this year, describing research indicating that marijuana could protect player's brains from the long-term effects of traumatic brain injuries:
As it turns out, recent studies are starting to contradict the notion that marijuana kills brain cells. Last year, researchers at Tel Aviv University in Israel gave low doses of THC, one of marijuana’s primary cannabinoids, to mice either before or after exposing them to brain trauma. They found that THC produced heightened amounts of chemicals in the brain that actually protected cells. Weeks later, the mice performed better on learning and memory tests, compared with a control group. The researchers concluded that THC could prevent long-term damage associated with brain injuries. Though preliminary, this is just one of many promising studies exploring marijuana’s benefits for the brain.