Tuesday, December 29, 2009

Alzheimer's Disease May Protect Against Cancer and Vice Versa

http://www.sciencedaily.com/releases/2009/12/091223164207.htm

ScienceDaily (Dec. 24, 2009) — People who have Alzheimer's disease may be less likely to develop cancer, and people who have cancer may be less likely to develop Alzheimer's disease, according to a new study published in the December 23, 2009, online issue of Neurology®, the medical journal of the American Academy of Neurology.

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For people who had Alzheimer's disease at the start of the study, the risk of future cancer hospitalization was reduced by 69 percent compared to those who did not have Alzheimer's disease when the study started. For Caucasian people who had cancer when the study started, their risk of developing Alzheimer's disease was reduced by 43 percent compared to people who did not have cancer at the start of the study, although that finding was not evident in minority groups.

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Can't tell from this if they allowed for the fact that both diseases would cause decreased life expectancy, which in itself would decrease the incidence of another disease in the future.

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