Quote:
Originally Posted by pithydithy 
I'm going to go against the grain here. We actually brought up supplementation with our pediatrician. I believe firmly in the benefits of breastfeeding. But I also read the New England Journal of Medicine summary on Vitamin D ( here's a publicly available copy) and found it to be convincing. Even among healthy women taking prenatal vitamins, drinking fortified milk, and eating fish, as many as Âľ of them may be Vitamin D deficient. Human breastmilk does not contain large quantities of Vitamin D and, while it is possible for mothers to supplement and transfer Vitamin D to their babies, in the study mentioned mothers had to increase intake to 20 times the current RDA to transfer enough. Maybe y'all are getting that much Vitamin D, but I'm pretty sure that I'm not. Evidence (some stronger than others) suggests that Vitamin D deficiency is associated with a long list of nasty stuff from rickets to cancer to schizophrenia.
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I'm a big supporter of vitamin D too. I know I don't get enough through sun exposure or diet, so I take a suppliment.
I think that formula companies are going to use the possibililty low levels of vit D in breastmilk of Northern mothers to undermine breastfeeding yet again. The thing is, breastmilk
is complete nutrition if the mother is nutritionally complete. If she has good vit D levels then the baby will too
if they both get enough sunlight during the times of the year when the sun makes vitamin D. Some mothers may not be able to have high enough vit D levels even with supplimentaion and good sun exposure, and so then the baby would need supplimentation too.
Currently the vit D recommendations in Canada have been moved to 1000 IU a day. Low vit D mothers in one of the studies had to suppliment 2000-4000 IU/day to increase vit D levels in the baby through breastmilk.
I'd like to see the breastfeeding community and the medical community come together on this and educate health care providers and mothers about vitamin D and how it is possible to increase maternal vit D levels to increase transfer through breastmilk. And info about safe sun exposure during the 'vit D making' times of year. And info about vit D rich complimentary foods when baby starts to eat solids.
And how about some more research into vit D levels in breastfed babies and supplimentation of baby or mother or both! We don't even know how they compare to formula fed babies, do we? They may be low in vit D. Maybe breastmilk vit D is more bioavailable, like breastmilk iron.
The current recommendations for supplimentation of all breastfed babies with vit D drops may be easier, but I worry in the long run that it is undermining breastfeeding.