Breastfeeding as the sole source of milk for 6 months and adolescent bone mineral density
Osteoporosis International, ISSN: 1433-2965, Vol: 28, Issue: 10, Page: 2823-2830
2017
- 9Citations
- 83Captures
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Metrics Details
- Citations9
- Citation Indexes9
- CrossRef4
- Captures83
- Readers83
- 83
Article Description
Summary: Little is known regarding the relationship between early life factors and bone mineral density (BMD). We found a positive association between breastfeeding for at least 6 months, without formula supplementation, and whole body adolescent BMD z-score. Introduction: The aim of the study is to assess the role of breastfeeding BF on adolescent bone mineral density (BMD) in a cohort prospectively followed since infancy. Methods: We studied 679 participants from an infancy iron deficiency anemia preventive trial in Santiago, Chile, followed to adolescence. Breast and bottle feeding were ascertained weekly from 4 to 12 months. At 16 years, whole body BMD was assessed by DEXA. Using linear regression, we evaluated associations between BF duration and BF as the sole source of milk and adolescent BMD z-score, adjusting for possible infancy, adolescent, and background confounders. Results: Mean birth weight and length were 3.5 (0.3) kg and 50.7 (1.6) cm. For at least 6 months, BF was the sole source of milk for 26.3% and with supplementation for 36.7%. For 37%, BF was provided for less than 6 months. Mean 16-year BMD z-score was 0.25 (1.0). Covariates included male sex, birth length, and gestational age. BF as the sole source of milk ≥6 months, compared to BF < 6 months, was associated with higher adolescent BMD z-score adjusting for covariates (β = 0.29, p < 0.05). Mixed BF was not significantly related to adolescent BMD z-score (β = 0.06, p = 0.47). For every 30 days of BF as the sole source of milk, adolescent BMD z-score increased by 0.03 (p = 0.01). Conclusion: BF without formula supplementation for at least 6 months was associated with higher adolescent BMD z-score and a suggestive trend in the same direction for BMD suggests that exclusivity and duration of BF may play a role in adolescent bone health.
Bibliographic Details
http://www.scopus.com/inward/record.url?partnerID=HzOxMe3b&scp=85020299942&origin=inward; http://dx.doi.org/10.1007/s00198-017-4106-0; http://www.ncbi.nlm.nih.gov/pubmed/28589419; http://link.springer.com/10.1007/s00198-017-4106-0; https://dx.doi.org/10.1007/s00198-017-4106-0; https://link.springer.com/article/10.1007/s00198-017-4106-0
Springer Science and Business Media LLC
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