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Better newborn vitamin D status lowers RSV-associated bronchiolitis in infants

Christy S Maxwell1, Elena T Carbone, Richard J Wood

  • 1Department of Nutrition, School of Public Health and Health Sciences, University of Massachusetts, Amherst, Massachusetts 01003, USA.

Nutrition Reviews
|September 6, 2012
PubMed

Insights

Low vitamin D in newborns is linked to higher risks of respiratory infections like pneumonia. Improving maternal vitamin D levels during pregnancy may reduce these risks in infants, a crucial public health goal.

Area of Science:

  • Pediatrics
  • Immunology
  • Public Health

Background:

  • Pneumonia causes 1.5 million deaths annually in children under 5.
  • Respiratory Syncytial Virus (RSV) is a leading cause of infant pneumonia and bronchiolitis in the US.
  • Low serum 25-hydroxyvitamin D [25(OH)D] is associated with increased risk of lower respiratory tract infections (LRTI).

Purpose of the Study:

  • To examine the association between cord blood 25(OH)D levels and the risk of respiratory infections in young children.
  • To highlight the public health significance of vitamin D status in preventing infant respiratory infections.

Main Methods:

  • Review of recent studies investigating cord blood 25(OH)D and subsequent respiratory infection risk.
  • Analysis of the relationship between maternal vitamin D status and infant outcomes.

Main Results:

  • Two recent studies indicate a link between cord blood 25(OH)D and respiratory infection risk.
  • Findings suggest a potential protective effect of higher vitamin D levels.

Conclusions:

  • Higher cord blood 25(OH)D may reduce the risk of respiratory infections in infants.
  • Further research is needed to confirm if maternal vitamin D supplementation during pregnancy can decrease RSV-associated LRTI in offspring.
  • Addressing low vitamin D status globally is critical for reducing infant mortality from respiratory infections.

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