NPR

Hormone Levels Likely Influence A Woman's Risk Of Alzheimer's, But How?

Scientists are taking a second look at the idea that hormone replacement therapy could reduce a woman's risk of dementia. New research suggests the key may be in giving it at the right time.
Having more than one child is associated with a lower risk of Alzheimer's, research finds, as is starting menstruation earlier in life than average and menopause later.

There's new evidence that a woman's levels of female sex hormones, including estrogen and progesterone, can influence her risk of Alzheimer's and other forms of dementia.

Women are less likely to develop dementia later in life if they begin to menstruate earlier, go through menopause later, and have more than one child, researchers reported Monday at the Alzheimer's Association International Conference in Chicago.

And recent studies offer hints that , which fell out of favor more than a decade ago, might offer

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