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The researchers analysed health
on 14,836 women. Researchers examined
data and blood, then modelled the effects of
on women's rates of
. A researcher found that having fewer pregnancies could have
effects on a mother's health. One benefit is a possible
risk of breast and ovarian cancer. However, the "wear and
" from
childbirths could reverse this lowered risk. Another
that could increase longevity is the social support a
receives for having children.
