Stress May Increase Risk for Alzheimer's Disease

http://www.sciencedaily.com/releases/2011/05/110526114535.htm

ScienceDaily (May 26, 2011) — Protein deposits in nerve cells are a typical feature of Alzheimer's disease: the excessive alteration of the tau protein through the addition of phosphate groups -- a process known as hyperphosphorylation -- causes the protein in the cells to aggregate into clumps. As a result, nerve cells die, particularly in the hippocampus, a part of the brain that plays an important role in learning and memory, as well as in the prefrontal cortex which regulates higher cognitive functions.


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