Does breastfeeding induce spontaneous abortion?
Article first published online: 23 OCT 2009
© 2009 The Author. Journal compilation © 2009 Japan Society of Obstetrics and Gynecology
Journal of Obstetrics and Gynaecology Research
Volume 35, Issue 5, pages 864–868, October 2009
How to Cite
Ishii, H. (2009), Does breastfeeding induce spontaneous abortion?. Journal of Obstetrics and Gynaecology Research, 35: 864–868. doi: 10.1111/j.1447-0756.2009.01072.x
- Issue published online: 23 OCT 2009
- Article first published online: 23 OCT 2009
- Received: February 2 2008. Accepted: January 26 2009.
- lactation counseling;
- postpartum care;
- spontaneous abortion
Aim: To verify the hypothesis that even if breastfeeding is continued during pregnancy, there are no harmful effects on pregnancy.
Methods: The outcomes of pregnancies in mothers who continued breastfeeding during pregnancy were studied. One hundred and ten pregnant women were recruited who had one full-term baby, no experience of premature birth or abortion, and who continued to breastfeed at diagnosis of pregnancy. Age and pregnancy history matched 774 pregnant women were selected as a control group. All of the control women stopped breastfeeding at least 3 months before becoming pregnant. We reviewed the outcome of each pregnancy retrospectively from patient records. Statistical analysis was conducted using the χ2 test.
Results: Eight of 110 pregnancies (7.3%) resulted in spontaneous abortion in the breastfeeding group, and 65 of 774 pregnancies (8.4%) in the control group. There were no statistically significant differences between the two groups (P > 0.05).
Conclusion: Even if the mother is pregnant, breastfeeding should be continued until natural weaning occurs. Further study is required to conclude safety of breastfeeding and premature birth.