Last update: Feb. 6, 2020


Very Low Risk for breastfeeding

Safe. Compatible.
Minimal risk for breastfeeding and infant.

According to populations, between 5% and 60% of women who become pregnant while still breastfeeding continue breastfeeding during pregnancy (Molitoris 2019, López 2017, Merchant 1990).

No differences were found in the duration of pregnancy, or in the weight of the newborn or in its subsequent growth or in spontaneous abortion rate between healthy and well-nourished pregnant women who continue to breastfeed and those who do not (Molitoris 2019, López 2017 , Shaaban 2015, Couple 2015, Ayrim 2014, Cetin 2014, Madarshahian 2012, Ishii 2009, Moscone 1993).

A retrospective study with many limitations showed a higher risk of spontaneous abortion with exclusive breastfeeding during pregnancy but not with breastfeeding with complementary feeding (Molitoris 2019), which
could be explained in reality by the lower spacing between pregnancies.

The nutritional, energy, mineral and vitamin needs are very high in pregnancy and more in breastfeeding (Molitoris 2019); that's why has been published less increase in body weight and lower level of hemoglobin, along with other problems, has been shown among women from economically deprived populations (Shaaban 2015, Ayrim 2014; Marquis 2003 y 2002, Siega 1993).

Ensuring the necessary extra dietary intake, breastfeeding is considered compatible and safe in a new pregnancy (CLM 2012, HWA 2009). The Breastfeeding Working Group of the Italian Society of Perinatal Medicine has positioned themselves in this regard (Cetin 2014).

Although nipple stimulation has been used to cause cervical maturation and induce labor (Kavanagh 2005), there is no evidence that oxytocin released during breastfeeding can induce premature birth or spontaneous abortion (Molitoris 2019), due to that the peak of oxytocin is not enough since uterine oxytocin receptors are not complete until the end of pregnancy in the uterus (López 2017).

Historically, breastfeeding has been regard as an contraceptive method. However, whenever not exclusive and beyond the first six-month period (LAM), breastfeeding should not be considered a reliable method for this purpose, nor should be a cause to avoid a new pregnancy (Tikka 1998, Short 1991, Chao 1987).

Possibly because of change in milk taste, higher nipple sensitivity, rejection feelings by the mother to continue breastfeeding, decreased production and spontaneous weaning are factors to stop breastfeeding while pregnancy (Moscone 1993).

Whenever breastfeeding was chosen to be continued, the breast produces colostrum again at the time of delivery and immediate puerperium.

Suggestions made at e-lactancia are done by APILAM´s pediatricians and pharmacists, and are based on updated scientific publications.
It is not intended to replace the relationship you have with your doctor but to compound it.

Jose Maria Paricio, Founder & President of APILAM/e-Lactancia

Your contribution is essential for this service to continue to exist. We need the generosity of people like you who believe in the benefits of breastfeeding.

Thank you for helping to protect and promote breastfeeding.

José María Paricio, founder of e-lactancia.

Other names

Pregnancy is also known as


Pregnancy belongs to this group or family:


  1. Molitoris J. Breast-feeding During Pregnancy and the Risk of Miscarriage. Perspect Sex Reprod Health. 2019 Sep;51(3):153-163. Abstract
  2. López-Fernández G, Barrios M, Goberna-Tricas J, Gómez-Benito J. Breastfeeding during pregnancy: A systematic review. Women Birth. 2017 Dec;30(6):e292-e300. Abstract
  3. Shaaban OM, Abbas AM, Abdel Hafiz HA, Abdelrahman AS, Rashwan M, Othman ER. Effect of pregnancy-lactation overlap on the current pregnancy outcome in women with substandard nutrition: a prospective cohort study. Facts Views Vis Obgyn. 2015 Dec 28;7(4):213-221. Abstract
  4. Ayrim A, Gunduz S, Akcal B, Kafali H. Breastfeeding throughout pregnancy in Turkish women. Breastfeed Med. 2014 Abstract
  5. Cetin I, Assandro P, Massari M, Sagone A, Gennaretti R, Donzelli G, Knowles A, Monasta L, Davanzo R; Working Group on Breastfeeding, Italian Society of Perinatal Medicine and Task Force on Breastfeeding, Ministry of Health, Italy. Breastfeeding during pregnancy: position paper of the Italian Society of Perinatal Medicine and the Task Force on Breastfeeding, Ministry of Health, Italy. J Hum Lact. 2014 Abstract
  6. Madarshahian F, Hassanabadi M. A comparative study of breastfeeding during pregnancy: impact on maternal and newborn outcomes. J Nurs Res. 2012 Abstract
  7. Pareja RG, Marquis GS, Penny ME, Dixon PM. A case-control study to examine the association between breastfeeding during late pregnancy and risk of a small-for-gestational-age birth in Lima, Peru. Matern Child Nutr. 2012 Abstract
  8. CML - Comité de Lactancia Materna AEP. Preguntas frecuentes sobre lactancia materna. Folleto. 2012 Full text (link to original source) Full text (in our servers)
  9. Ishii H. Does breastfeeding induce spontaneous abortion? J Obstet Gynaecol Res. 2009 Abstract
  10. HWA - Healthy Western Australia, Department of Health. More about breastfeeding. Health Pamphlet 2009 Full text (link to original source) Full text (in our servers)
  11. Kavanagh J, Kelly AJ, Thomas J. Breast stimulation for cervical ripening and induction of labour. Cochrane Database Syst Rev. 2005 Jul 20;(3):CD003392. Review. Abstract
  12. Marquis GS, Penny ME, Zimmer JP, Díaz JM, Marín RM. An overlap of breastfeeding during late pregnancy is associated with subsequent changes in colostrum composition and morbidity rates among Peruvian infants and their mothers. J Nutr. 2003 Abstract Full text (link to original source) Full text (in our servers)
  13. Marquis GS, Penny ME, Diaz JM, Marín RM. Postpartum consequences of an overlap of breastfeeding and pregnancy: reduced breast milk intake and growth during early infancy. Pediatrics. 2002 Abstract Full text (link to original source) Full text (in our servers)
  14. Tikka M. [Advice on contraception for new mothers in Finland]. Katilolehti. 1998 Abstract
  15. Siega-Riz AM, Adair LS. Biological determinants of pregnancy weight gain in a Filipino population. Am J Clin Nutr. 1993 Abstract Full text (link to original source) Full text (in our servers)
  16. Moscone SR, Moore MJ. Breastfeeding during pregnancy. J Hum Lact. 1993 Jun;9(2):83-8. Abstract
  17. Short RV, Lewis PR, Renfree MB, Shaw G. Contraceptive effects of extended lactational amenorrhoea: beyond the Bellagio Consensus. Lancet. 1991 Abstract
  18. Merchant K, Martorell R, Haas J. Maternal and fetal responses to the stresses of lactation concurrent with pregnancy and of short recuperative intervals. Am J Clin Nutr. 1990 Abstract Full text (link to original source) Full text (in our servers)
  19. Chao S. The effect of lactation on ovulation and fertility. Clin Perinatol. 1987 Abstract

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