This document provides information about Amyotrophic Lateral Sclerosis (ALS), also known as Lou Gehrig's disease. It defines ALS as a disease that destroys motor neurons in the brain and spinal cord, causing muscles throughout the body to weaken and lose function. Over time, people with ALS lose the ability to speak, eat, move, and breathe independently as the disease progresses. The document also shares statistics on ALS such as its higher prevalence in people over 60, its rarity, and the author's personal experience caring for their grandmother who had ALS.