Question:
Jerry Lewis (born Joseph Levitch, March 16, 1926 - August 20, 2017) was an American comedian, actor, singer, humanitarian, film director, film producer and screenwriter. He was known for his slapstick humor in film, television, stage and radio and was nicknamed the "King of Comedy". Lewis was one-half of the hit popular comedy duo Martin and Lewis with singer Dean Martin from 1946 to 1956.
Lewis had a number of illnesses and addictions related both to aging and a back injury sustained in a comedic pratfall from a piano while performing at the Sands Hotel and Casino on the Las Vegas Strip on March 20, 1965. The accident almost left him paralyzed. In its aftermath, Lewis became addicted to the painkiller Percodan for thirteen years. He said he had been off the drug since 1978. In April 2002, Lewis had a Medtronic "Synergy" neurostimulator implanted in his back, which helped reduce the discomfort. He was one of the company's leading spokesmen. In the 2011 documentary Method to the Madness of Jerry Lewis, Lewis said he had his first heart attack at age 34 while filming Cinderfella in 1960. In December 1982, he had another heart attack. En route to San Diego from New York City on a cross-country commercial airline flight on June 11, 2006, he had another.  It was discovered that he had pneumonia, as well as a severely damaged heart. He underwent a cardiac catheterization and two stents were inserted into one of his coronary arteries, which was 90 percent blocked. The surgery resulted in increased blood flow to his heart and allowed him to continue his rebound from earlier lung problems. Having the cardiac catheterization meant canceling several major events from his schedule, but Lewis fully recuperated in a matter of weeks. In 1999, Lewis' Australian tour was cut short when he had to be hospitalized in Darwin with viral meningitis. He was ill for more than five months. It was reported in the Australian press that he had failed to pay his medical bills. However, Lewis maintained that the payment confusion was the fault of his health insurer.  The resulting negative publicity caused him to sue his insurer for US$100 million. Lewis had prostate cancer, type 1 diabetes, pulmonary fibrosis, and a decades-long history of cardiovascular disease. Prednisone treatment in the late 1990s for pulmonary fibrosis resulted in weight gain and a noticeable change in his appearance. In September 2001, Lewis was unable to perform at a planned London charity event at the London Palladium. He was the headlining act, and he was introduced but did not appear. He had suddenly become unwell, apparently with heart problems.  He was subsequently taken to the hospital. Some months thereafter, Lewis began an arduous, months-long therapy that weaned him off prednisone and enabled him to return to work. On June 12, 2012, he was treated and released from a hospital after collapsing from hypoglycemia at a New York Friars Club event. This latest health issue forced him to cancel a show in Sydney. In an October 2016 interview with Inside Edition, Lewis acknowledged that he might not star in any more films, given his advanced age, while admitting, through tears, that he was afraid of dying, as it would leave his wife and daughter alone. In June 2017, Lewis was hospitalized at a Las Vegas hospital for a urinary tract infection.
Answer this question using a quote from the text above:

What caused the illness?

Answer:
illnesses and addictions related both to aging and a back injury sustained

Answer the question at the end by quoting:

William Miller Edwards (June 21, 1905 - June 12, 1987) was an American football player and coach. He served as the head football coach at Western Reserve University, Vanderbilt University and Wittenberg University in a career lasting more than 30 years, compiling a win-loss-tie record of 168-45-8. Edwards also coached the Detroit Lions of the National Football League (NFL) from 1941 to 1942, tallying a 4-9-1 record, and served as an assistant coach for the NFL's Cleveland Browns in the late 1940s. Raised near Massillon, Ohio, Edwards was the son of an immigrant from Wales who worked in the area's coal mines.
Having built a strong record at Western Reserve, Edwards was in the running for head coaching roles at a number of larger universities and professional teams. He met with officials at Marquette University and was considered a candidate for coaching duties at Colorado University and for the National Football League's Detroit Lions. After visiting with Lions owner Fred Mandel, Edwards ultimately was hired in February 1941 to succeed George Clark. Both Edwards and Dugan Miller signed two-year contracts. Edwards was given a $10,000 annual salary ($166,380 in 2017 dollars), more than double the $4,420 he was paid at Western Reserve.  Edwards's stint as the Lions coach was unsuccessful. He guided the team to a 4-6-1 record in 1941, and Mandel fired him after three straight losses to begin the 1942 season as the team's roster was depleted by players' service in World War II. Detroit went on to lose all the rest of its games after John Karcis was named his replacement.  Edwards enlisted in the U.S. Navy later in 1942 as America's involvement in the war intensified. While in the military, he served at St. Mary's Pre-Flight, a training program in California, and coached the Air Devils football team there. He also served at a base in Pensacola, Florida. Edwards was discharged in 1946, and spent a year in the sporting goods business in Cleveland, Ohio before reuniting with Brown, who had become the first coach of the Cleveland Browns in the All-America Football Conference (AAFC). Edwards took a position as a tackle coach and remained with the team for two seasons. He coached tackles including Ernie Blandin, Lou Rymkus and future Pro Football Hall of Fame member Lou Groza. The Browns won the AAFC championship in both of Edwards's years as an assistant; the team won all of its games in 1948, turning in professional football's first perfect season.

How was he involved in the military?
he served at St. Mary's Pre-Flight,