Football may be America’s favorite sport and the National Football League (NFL) is still at the apex of its popularity, but it has a dark cloud overshadowing its undeniable clout amongst professional sports.

Despite being widely considered one of the most physically taxing sports in the world — researchers found that 99 percent of former NFL players who donated their brains to science had some form of chronic traumatic encephalopathy (CTE) — the league still enforces one of the strictest cannabis policies in professional sports.

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