Paragraph 2
Researchers analysed
, DNA, and health data on 14,000 women. Researchers then modelled the
of reproduction on rates of
. They found that fewer
could have positive
on a mother's health. One
is a possible lower risk of
. However, the "
and tear" from multiple childbirths could reverse this lowered risk. Another
that could increase longevity is the social
a mother receives.
