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Study Finds No Link Between Abortions and Breast Cancer Risk

2/12/2026

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Summary

Story summary

A Finnish case-control study published in Acta Obstetricia et Gynecologica Scandinavica found no link between prior abortions or miscarriages and the risk of pre- or postmenopausal breast cancer.
The study analyzed data from 31,687 women with breast cancer and 158,433 controls from 1972 to 2021.
The researchers reported that risk did not vary with the number of abortions or miscarriages.
Oskari Heikinheimo (University of Helsinki) led the study.

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Story summary

A Finnish case-control study published in Acta Obstetricia et Gynecologica Scandinavica found no link between prior abortions or miscarriages and the risk of pre- or postmenopausal breast cancer.
The study analyzed data from 31,687 women with breast cancer and 158,433 controls from 1972 to 2021.
The researchers reported that risk did not vary with the number of abortions or miscarriages.
Oskari Heikinheimo (University of Helsinki) led the study.