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Mum of 5
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I finally found the UK government blog regarding vit D supplementation in BF babies, that mentions that the study used to recommend it from birth in the US was actually based on a large number of FF and African-American babies, and also they only took one blood sample from each child and vitamin D levels can vary over time. The study found no difference between BF babies whose mums took vit D supplements and those who were FF however; and this is why the UK government feels it is perfectly adequate for mums to take 400 to 1000iu per day of vit D instead
https://www.nhs.uk/news/2008/06June/Pages/VitaminDinpregnancy.aspx
This is the summing up in the article
What does the NHS Knowledge Service make of this study?
This was a well-conducted study of the prevalence of vitamin D deficiency in the blood of infants and toddlers. There are some points to consider when interpreting these results:
Even though 40% of children aged under two years had levels of vitamin D that were considered less than ideal, they were all generally healthy. The study did not investigate what effects these reduced levels of vitamin D in early childhood would have on health at later ages.
Only one blood sample was taken for each child, therefore these readings may not have been representative of their vitamin D levels over a period of time. Without information about vitamin D levels and bone density over a period of time, it is not possible to firmly conclude that vitamin D deficiency was responsible for the bone changes seen.
The study sample included a high proportion of African Americans (about 61%) and a high proportion of non-breastfed infants. The results may not be representative of samples with different ethnic backgrounds or with a different proportion of breastfed infants.
Current UK guidance from NICE suggests that it is important to maintain adequate vitamin D during pregnancy and breastfeeding, and that women may choose to take up to 10 micrograms of vitamin D a day during these periods, particularly if they have specific risk factors for vitamin D deficiency. In the UK, the NHS provides vitamin supplements containing vitamin D for eligible children aged between six months and four years.
https://www.nhs.uk/news/2008/06June/Pages/VitaminDinpregnancy.aspx
This is the summing up in the article
What does the NHS Knowledge Service make of this study?
This was a well-conducted study of the prevalence of vitamin D deficiency in the blood of infants and toddlers. There are some points to consider when interpreting these results:
Even though 40% of children aged under two years had levels of vitamin D that were considered less than ideal, they were all generally healthy. The study did not investigate what effects these reduced levels of vitamin D in early childhood would have on health at later ages.
Only one blood sample was taken for each child, therefore these readings may not have been representative of their vitamin D levels over a period of time. Without information about vitamin D levels and bone density over a period of time, it is not possible to firmly conclude that vitamin D deficiency was responsible for the bone changes seen.
The study sample included a high proportion of African Americans (about 61%) and a high proportion of non-breastfed infants. The results may not be representative of samples with different ethnic backgrounds or with a different proportion of breastfed infants.
Current UK guidance from NICE suggests that it is important to maintain adequate vitamin D during pregnancy and breastfeeding, and that women may choose to take up to 10 micrograms of vitamin D a day during these periods, particularly if they have specific risk factors for vitamin D deficiency. In the UK, the NHS provides vitamin supplements containing vitamin D for eligible children aged between six months and four years.