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Reproductive history linked to odds of dementia

Women who had at least three children were 12% less likely to develop dementia than those with just one child, but those who had at least three miscarriages had 47% increased odds of dementia compared with those who never lost a pregnancy, while dementia was also more likely among those who had shorter reproductive periods, those who had their first menstrual period later and those who underwent menopause at a younger age, researchers reported at the Alzheimer's Association annual meeting. Another study, also presented at the meeting, linked each month of pregnancy experienced by women to a 5.5% lower risk of Alzheimer's disease.

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