Former NFL running back Johnson reveals MND/ALS diagnosis

The 40-year-old, a former NFL offensive player of the year who last played in 2017, said on ABC's Good Morning America that he had been diagnosed with the disease last year.

"We hoped it was something else, but after thorough testing, they finally came down with a diagnosis of ALS," said Johnson in an interview with Michael Strahan in which he had to use a voice modulator because the disease has already taken away his ability to speak.