Vitamin D and Pregnancy: Research Findings & Recommendations

Trying to conceive? Higher concentrations of Vitamin D in follicular fluid are an independent predictor of the success of IVF treatment. Vitamin D is hypothesized to support ovarian/uterine hormone production.

Pregnant? Women given adequate supplemental Vitamin D during pregnancy are less likely to develop high blood pressure or preeclampsia. Their babies are less likely to develop type I diabetes. Vitamin D helps support healthy immunity, and prevents autoimmune conditions like type I diabetes from developing.

How much do I take? Current Canadian guidelines vary between organizations, and what you need to take will depend on (i) your blood levels; (ii) the amount of sun exposure without sunscreen you get; (iii) your skin colour; and, (iv) the season. Please consult your ND for an individual prescription.

Babies: 400 IU per day, with more (800 – 1200 IU per day) in winter months, and after 1 year (as weight increases, so does necessary dose).

Breast Feeding: Current study recommendations are for supplementing as high as 6400 IU, though common prescriptions are for 2000-4000 IU per day.

Adults, non-pregnant: Recommendations range, as do individual needs. *Get your blood levels checked first. Common supplemental doses range from 2000- 5000 IU per day, although some people do not require supplementation.

(Study References Available Upon Request)

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