Holly and Beth, two women whose husbands died from ALS, amyotrophic lateral sclerosis, (also known as Lou Gehrig’s disease) join David Rintell, head of patient advocacy at BridgeBio to share their experience. ALS is a progressive and fatal neurodegenerative disease that affects nerve cells in the brain and spinal cord.   Rachel Groth, Ph.D., vice president and head of neuroscience research at BridgeBio, provides an overview of ALS. She explains how this devastating disease is characterized by the selective and progressive loss of motor neurons, which are cells in the body and brain controlling muscle movement. As the disease progresses, it results in paralysis of nearly all skeletal muscles.