About the film
Gleason is an American documentary film which premiered at the 2016 Sundance Film Festival. It covers five years in the life of the former New Orleans Saints football defensive back Steve Gleason, who has Amyotrophic lateral sclerosis (ALS), sometimes known as Lou Gehrig's disease, a rare incurable neurodegenerative condition associated with the former New York Yankees baseball star Lou Gehrig, who died from the disease in 1941.
From the film's Wikipedia article (CC BY-SA 4.0).