These kinds of observational studies cannot determine cause and effect, but a more rigorous study isn't likely to be done. “This represents the best data we have on the topic,” said the study's lead author Katie O’Brien. The researchers did find hints of a potentially small increased risk for cancer for women who had never had a hysterectomy or fallopian tube-tying surgery.
from Kaiser Health News https://ift.tt/37KTFzO
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