A new study from Lund University shows that bone density drops significantly in breastfeeding women, but recovery happens quickly afterward. The research offers a positive surprise and could influence osteoporosis treatments. Findings come from a ten-year follow-up of 750 women.
Researchers at Lund University have examined how breastfeeding affects women's bone density. The study, led by Professor Kristina Åkesson in orthopedics and colleague Lisa Egund, followed 750 women for ten years starting at age 25.
Pregnancy has some impact on bone density, with a small difference shortly after birth. After three years, no difference was visible, unless the woman became pregnant again. During breastfeeding, the decline is greater. If measured six months or less after ending breastfeeding, the difference is seven percent lower compared to before breastfeeding.
Recovery is quick, however. After ending breastfeeding, bone density regains strength, and after two years, it was slightly higher than before breastfeeding began among participants. This is a positive surprise according to the researchers.
"If we understand these mechanisms, it can be used to develop more potent drugs against osteoporosis, bone fragility. We of course also hope that the results positively influence women's choices regarding breastfeeding," says Kristina Åkesson in a press release from Lund University.
The study highlights breastfeeding's short-term effects on the skeleton but points to long-term recovery, which may ease concerns about osteoporosis.