Former NFL running back Chris Johnson says he has been diagnosed with amyotrophic lateral sclerosis (ALS). Multiple outlets report that Johnson publicly revealed the diagnosis in a television interview on June 29. Yahoo Sports and other sources state that the diagnosis occurred in 2025, with Johnson later discussing his decision to “fight” the disease. Some reporting also frames ALS as part of the broader motor neuron disease category, describing it as motor neurone disease/ALS. Johnson is a former Tennessee Titans star who played in the NFL from 2008 onward and is known for a standout 2009 season in which he rushed for more than 2,000 yards; at least one outlet notes that he is among a small group of players to achieve that rushing total in a single season. Coverage also highlights that Johnson is a former Pro Bowl player early in his career. While one outlet includes additional commentary about ALS and neurological diseases, other sources primarily focus on the fact and timing of Johnson’s ALS disclosure. Across reports, Johnson’s age is given as 39.