Alzheimer’s Disease in 22 Twin Pairs – 13-Year Follow-Up: Hormonal, Infectious and Traumatic Factors
- 26 February 1999
- journal article
- clinical trial
- Published by S. Karger AG in Dementia and Geriatric Cognitive Disorders
- Vol. 10 (2) , 148-151
- https://doi.org/10.1159/000017115
Abstract
We obtained follow-up data on 22 sets of twins where at least one twin had Alzheimer's disease (AD). The concordance rate for monozygotic twins (n = 17 pairs) was 59%, whereas that for dizygotic twins was 40%. In our series 8 monozygotic twins had hysterectomies; all had AD. The twins with hysterectomies also had a tendency to develop AD at an earlier age than their co-twin. Five twins with serious systemic infection developed AD, and they tended to have earlier onset than their corresponding twin. We found no strong evidence that head injury predisposed to AD.Keywords
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