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Related Experiment Videos

Lactation and maternal bone health.

Heidi J Kalkwarf1

  • 1Division of General and Community Pediatrics, Children's Hospital Medical Center, Cincinnati, OH 45229, USA. heidi.kalkwarf@cchmc.org

Advances in Experimental Medicine and Biology
|September 24, 2004
PubMed
Summary

Transient bone loss during breastfeeding is temporary and bone density recovers after weaning. This bone loss does not increase long-term fracture risk in most women.

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Area of Science:

  • Reproductive biology
  • Bone metabolism
  • Human physiology

Background:

  • Women experience bone loss during lactation to supply calcium for breast milk.
  • This bone loss occurs irrespective of dietary calcium intake and is a transient physiological adaptation.
  • Lactation-induced bone loss and subsequent recovery are linked to hormonal changes and postpartum recovery duration.

Purpose of the Study:

  • To investigate the impact of lactation on bone density in women.
  • To understand the recovery patterns of bone mass after weaning.
  • To assess the long-term implications of lactation-associated bone loss on skeletal health and fracture risk.

Main Methods:

  • The study reviews existing literature on bone density changes during lactation and postpartum.
  • It examines the relationship between hormonal function, postpartum amenorrhea, and bone recovery.
  • Long-term bone density in women with a history of breastfeeding is analyzed.

Main Results:

  • Bone density decreases during lactation but rapidly recovers after weaning.
  • Bone recovery can occur even with closely spaced pregnancies.
  • Women who have breastfed multiple children do not exhibit reduced bone density post-menopause.

Conclusions:

  • Lactation-induced bone loss is a transient phenomenon and does not elevate the risk of osteoporotic fractures later in life for most women.
  • Further research is warranted for specific populations, including adolescents, vitamin D deficient women, those with very low calcium intake, and mothers of multiples, to ensure adequate bone mass recovery.

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