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Question
Briefly describe Alzheimer disease.
Alzheimer disease is a progressive, irreversible brain disorder characterized by gradual deterioration of memory, reasoning, language, and eventually physical functioning. Alzheimer disease involves a deficiency in the important brain messenger chemical acetylcholine, which plays an important role in memory. Also, as Alzheimer disease progresses, the brain shrinks and deteriorates. Because of differences in onset, Alzheimer also is now described as early-onset (initially occurring in individuals younger than 65 years of age) or late-onset (which has its initial onset in individuals 65 years of age and older). Because of the increasing prevalence of Alzheimer disease, researchers have stepped up their efforts to discover the causes of the disease and to find more effective ways to treat it.
Answer
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Related questions
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