Campbell has a history of addiction to alcohol for many years and now he is diagnosed with Alzheimer's disease.

Although no strong connection has been established by doctors between alcohol consumption and the disease medical experts, however, feel that heavy alcohol consumption has both immediate and long-term detrimental effects on the brain and neuro-psychological functioning.

Alzheimer's disease, which is a progressive degeneration of the brain, claims about 23,000 American lives a year. It is the eighth leading cause of death among the elderly in the U.S.

The early onset of Alzheimer's can develop in people at an age as young as 40, but most victims develop and progress to the next stage by the time they turn 65. Alzheimer's is a form of dementia and is particularly dangerous because it robs people of their mental faculties and memories.

Some common early symptoms of Alzheimer's disease include confusion, disturbances in short-term memory, problems with attention and spatial orientation, changes in personality, language difficulties and unexplained mood swings.

After Glen's detection of the disease, lets have a look at some of the celebrities who succumbed to Alzheimer's Disease:

Joe Adcock
Joseph Adcock (October 30, 1927 – May 3, 1999) was an American first baseman and right-handed batter in Major League Baseball, best known for his years with the powerful Milwaukee Braves teams of the 1950s, whose career included numerous home run feats. cgi.ebay.com
Perry Como
Perry Como was an American singer and television personality chartstats.com
Burgess Meredith
Burgess Meredith, was an American actor in theatre, film, and television, who also worked as a director. fan.tcm.com
Jack Lord
Jack Lord was an American television, film, and Broadway actor. rememberingjacklord.com
Rita Hayworth
Andrew Embiricos, grandson of Hollywood screen legend Rita Hayworth, was found dead in his New York City apartment Sunday in what police called an apparent suicide. However, his mother and friends doubt suicide. app.lemurpublishing.com
Thomas Dorsey
He is known as "the father of black gospel music" and was at one time so closely associated with the field that songs written in the new style were sometimes known as "dorseys." Earlier in his life he was a leading blues pianist known as Georgia Tom. royblakeley.name
James Doohan
James Doohan was a Canadian character and voice actor best known for his role as Montgomery "Scotty" Scott in the television and film series Star Trek. britannica.com
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