On July 4, 1939, Lou Gehrig gave one of the most famous
speeches in sports history. The occasion was "Lou Gehrig
Appreciation Day at Yankee Stadium in New York. Parts of the
speech are well known to this day: "Fans, for the past two
weeks you have been reading about the bad break I got. Yet
today I consider myself the luckiest man on the face of the
earth." The audio recording of his voice echoing throughout the
stadium has been replayed countless times.

The "bad break" Gehrig alluded to in his speech was his
contraction of a fatal disease known as amyotrophic lateral
sclerosis, or ALS. ALS is a neuromuscular disease that attacks
nerve cells in the central nervous system, causing paralysis and
eventually death. No one knows what causes ALS, and nearly
30,000 people in the United States live with the disease.
Because of Gehrig's extreme celebrity and the tragedy of his
death, ALS is commonly referred to as Lou Gehrig's disease.

The second paragraph is mainly about

The effects of ALS on Lou Gehrigs career.

The reason ALS is called Lou Gehrigs Disease

The disease Lou Gehrig has, ALS

the cause of the disease Lou Gehrig Had.