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Urielthompson75
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Plagiarized warning
The aberrant buildup of protein in and around brain cells is assumed to be the origin of Alzheimer's disease. Amyloid is one of the proteins involved, and its deposits create plaques around brain cells. The other protein is tau, which builds up in the brain cells and causes tangles. Although the actual cause of this process is unknown, scientists do know that it begins several years before any symptoms arise. Different parts of the brain are affected in more rare forms of Alzheimer's disease. Increased risk, age, family history, Down's syndrome, head injuries, cardiovascular disease, and other variables are among them.