Prior blood transfusions and Alzheimer's disease
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Updated: Nov 9, 2026

Detection of Neuritic Plaques in Alzheimer's Disease Mouse Model
Published on: July 26, 2011
N I Bohnen1, M A Warner, E Kokmen
1Department of Neurology, Mayo Clinic, Rochester, MN 55905.
Abstract:
We performed a population-based, case-control study to evaluate prior blood transfusion as a potential risk factor for Alzheimer's disease (AD). All cases were incident cases of AD from 1975 to 1984 with residence for 40 years or more in Olmsted County, Minnesota, prior to their onset of dementia (N = 252). There was one age- and gender-matched control for each case. We ascertained the number of blood transfusions prior to the age of onset of dementia and the corresponding year in each control. Sixty-five cases and 55 controls had at least one prior blood transfusion. We did not find a significantly increased risk of AD for the events of at least one, three, or six blood transfusions.
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