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dwroberts 4 days ago

> fetal microchimerism

This is just a fact of reality for any women that have children though.

Eg male chromosomes from fetuses being found in women’s brains: https://pmc.ncbi.nlm.nih.gov/articles/PMC3458919/

(I don’t think this is believed to be unusual or an example of ‘containment failure’ of the womb)

Qem 4 days ago | parent [-]

> Results also suggested lower prevalence (p = 0.03) and concentration (p = 0.06) of male microchimerism in the brains of women with Alzheimer’s disease than the brains of women without neurologic disease.

It appears it may even be protective.

HPsquared 3 days ago | parent [-]

It's probably the whole "lifestyle package" difference between having children and not. Hard to pin down a single biochemical factor in that.