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Parkinson Disease
More than one million people in the United States suffer from Parkinson disease. This neurodegenerative condition most often occurs after the age of 60 and is slightly more common in men.
Parkinson disease affects an area of the brain called the substantia nigra causing these brain cells to die or become impaired. These neurons produce dopamine, which is the chemical messenger that allows the body's muscles and motor system to function normally. The loss of dopamine neurons results in the inability to control movements properly.
Alzheimer Disease
Alzheimer disease is a progressive brain disorder that affects areas of the brain involved in memory, intelligence, judgment, language, and behavior. According to statistics provided by the Alzheimer Association, it is estimated that 5.3 million Americans suffer from Alzheimer disease. The risk for developing Alzheimer disease increases with age and about one in 8 people over the age of 65 is affected by Alzheimer disease. It is the most common form of mental decline or dementia in older adults.
Alzheimer disease may present with a variety of symptoms, however the most common symptom is memory loss. People closest to the individual affected by Alzheimer disease may notice subtle changes that may not be apparent to others or to the individual himself.
Huntington Disease
Huntington disease is an inherited, neurodegenerative and progressive brain disease that currently affects approximately 15,000 Americans. Most frequently the symptoms of HD occur between the ages of 30 and 50.
A major breakthrough was made in 1993 when the gene associated with Huntington disease was discovered. It is a familial disease. Each child of a parent with the huntingtin gene has a 50-50 chance of inheriting the gene. At least 150,000 Americans have a 50% risk of carrying the gene and developing the disease.
Institute for Neurodegenerative Disorders
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