Former NFL star Chris Johnson says he has been diagnosed with ALS

Former NFL running back Chris Johnson, now 40, announced he has been diagnosed with ALS (Lou Gehrig's disease), revealing he received the diagnosis last year. He shared the news in a Monday 'Good Morning America' interview with retired NFL player and co-anchor Michael Strahan, during which Johnson used an eye-movement-controlled device to speak due to the disease's rapid progression. Doctors believe he has 'sporadic' ALS, as there is no family history of the condition, and Johnson said he hopes sharing his story will help others get diagnosed sooner and inspire further research.