No association between abortion and breast cancer

Article

-->

No association exists between induced abortion and breast cancer in premenopausal women, according to the results of a prospective cohort study. And it's possible that an inverse association exists between spontaneous abortion, especially in very young women, and the disease.

Researchers used the population of women that participated in the Nurses Health Study II. Of these women, approximately 16,000 or 15% reported having an induced abortion, and almost 22,000 or 21% reported having a spontaneous abortion.

The hazard ratio for breast cancer among women who had one or more induced abortions was 1.01 (95% CI, 0.88–1.17) and for women having one or more spontaneous abortions was 0.89 (95% CI, 0.78–1.01). The relationship between each type of abortion and breast cancer was largely unchanged regardless of the number of abortions that occurred, age at the time of the abortion, parity, or timing of the abortion during the pregnancy.

Recent Videos
Mitchell Creinin, MD, reports estetrol pill eases menstrual symptoms | Image Credit: health.ucdavis.edu
1 expert is featured in this series.
Susanna Mitro, PhD, reveals ethnic disparities in uterine fibroid diagnosis | Image Credit: divisionofresearch.kaiserpermanente.org.
Shayna Mancuso, DO, highlights the real impact of menopause | Image Credit: linkedin.com.
Jihong Liu, ScD, explains how to improve perinatal outcomes in COVID patients | Image Credit: sc.edu.
1 expert is featured in this series.
Jihong Liu, ScD, highlights adverse perinatal outcomes linked to the COVID pandemic | Image Credit: sc.edu.
Experts highlight infant health benefits from minor diet changes in pregnancy | Image Credit: ohsu.edu.
Connie Stark, RNC, PNC, provides fertility preservation insights for endometriosis patients | Image Credit: linkedin.com.
How the impact of maternal diet on infant health is strengthened in late pregnancy | Image Credit: ohsu.edu.
Related Content
© 2025 MJH Life Sciences

All rights reserved.