CTE is a progressive degenerative disease of the brain common in athletes with a history of repetitive brain trauma, including symptomatic concussions as well as asymptomatic sub-concussive hits to the head. CTE has been known to affect boxers since the 1920s. With the recent passing of NFL great and CTE sufferer, Frank Gifford, more concern than ever is being focused on solutions.
Surprisingly, marijuana offers hope though it's presently a banned substance on the NFL's drug policy. Marijuana has been shown to protect the brain from head trauma and also assist with recovery. In fact, the US Government holds a patent for marijuana as a neuroprotectant.