Pregnancy vitamin D supplementation and offspring bone mineral density in childhood: Follow-up of a randomised controlled trial

Rebecca J. Moon, Stefania D'Angelo, Elizabeth M. Curtis, Kate A. Ward, Sarah R. Crozier, Inez Schoenmakers, M. Kassim Javaid, Nicholas J. Bishop, Keith M. Godfrey, Cyrus Cooper, Nicholas C. Harvey, the MAVIDOS Trial Group

Research output: Contribution to journalArticlepeer-review

Abstract

Background: Findings from the MAVIDOS trial demonstrated a positive effect of gestational cholecalciferol supplementation on offspring bone mineral density (BMD) at age 4 years. Demonstrating persistence of this effect is important to understanding whether maternal vitamin D supplementation could be a useful public health strategy to improving bone health.

Objective: We investigated whether gestational vitamin D supplementation increases offspring BMD at 6-7 years in an exploratory post-hoc analysis of an existing trial.

Methods: In the MAVIDOS randomised controlled trial, pregnant females.

Results: 454 children were followed up at age 6-7 years, of whom 447 had a usable DXA scan. Gestational cholecalciferol supplementation resulted in higher WBLH BMC (0.15 SD, 95%CI 0.04, 0.26), BMD (0.18 SD, 95%CI 0.06,0.31), BMAD (0.18 SD, 95%CI 0.04,0.32) and lean mass (0.09 SD, 95%CI 0.00,0.17) compared to placebo. The effect of pregnancy cholecalciferol on bone outcomes was similar at ages 4 and 6-7 years.

Conclusions and relevance: Supplementation with cholecalciferol 1000 IU/day during pregnancy resulted in greater offspring BMD and lean mass in mid-childhood versus placebo in this exploratory post-hoc analysis. These findings suggest that pregnancy vitamin D supplementation may be an important population health strategy to improve bone health.
Original languageEnglish
JournalThe American Journal of Clinical Nutrition
Early online date19 Sep 2024
DOIs
Publication statusE-pub ahead of print - 19 Sep 2024

Cite this