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Breastfed without vitamin D supplements – a problem for NZ infants Jan 2013

Vitamin D status of exclusively breastfed infants aged 2-3 months.

Arch Dis Child. 2013 Jan 8.
Wall CR, Grant CC, Jones I.
Discipline of Nutrition, Faculty of Medical and Health Sciences, University of Auckland, , Auckland, New Zealand.

BACKGROUND: New Zealand in 2008 adopted WHO policy which recommends that all infants are exclusively breast fed until 6 months of age. The benefits of this policy for the infant are undisputed; however, this policy has the potential to adversely impact on infant vitamin D status. A number of countries now recommend that all breastfed infants receive daily vitamin D supplementation of 400 IU to prevent rickets. New Zealand has no policy on the vitamin D supplementation of 'low-risk' breastfed infants. There are no data on the vitamin D status of exclusively breastfed infants in the first few months of life in New Zealand.

AIM:To describe serum 25-hydroxy-vitamin D (25(OH)D) concentrations in exclusively breastfed infants aged 2-3 months.

DESIGN/METHODS: Healthy term exclusively breastfed infants who were receiving no vitamin D supplements were enrolled over a 15-month period. A capillary blood sample was obtained from each infant. Serum 25(OH)D was measured using isotope-dilution liquid chromatography-tandem mass spectrometry.

RESULTS: 94 infants were enrolled (mean age 10 weeks). Median 25(OH)D concentration was 53 nmol/l (IQR 14-100 nmol/l). 23 (24%) infants had serum 25(OH)D concentration <27.5 nmol/l. Infants enrolled during winter had a median (IQR) 25(OH)D serum concentration of 21 nmol/l (14,31). Infants enrolled during summer had a median (IQR) 25(OH)D concentration of 75 nmol/l (55 100) (winter vs summer, p<0.0001).

CONCLUSIONS: Vitamin D deficiency is prevalent in exclusively breastfed infants in New Zealand. Vitamin D supplementation should be considered as part of New Zealand's child health policy.

PMID: 23303428

Comment by VitaminDWiki

Mean vitamin D level of breast fed NZ infants = 8.4 ng during winter
New Zealand made a big mistake.

  • Took recommendation for breast feeding
  • Did not take recommendation for vitamin D supplementation of infants or mothers - especially while avoiding the sun.

Wonder how many other countries have made the same mistake.

See also VitaminDWiki

1000 IU per 25 lbs.jpg