Overview
- Researchers used nationwide Finnish registries to compare 31,687 women with breast cancer to 158,433 controls across diagnoses from 1972 to 2021.
- Women with a prior induced abortion had breast cancer risks similar to those with no abortion history both before and after age 50.
- A history of miscarriage likewise was not associated with higher breast cancer risk in the analysis.
- Risk did not vary by the number of abortions or miscarriages or by the timing of the first event.
- Study authors said the findings should reassure women and help dispel persistent claims linking pregnancy loss to breast cancer, with results published in Acta Obstetricia et Gynecologica Scandinavica (DOI: 10.1111/aogs.70154).