Production of vitamin D in the decidua, placenta and the maternal kidneys increases during pregnancy [17].
Since vitamin D level is dependent on the exposure of sunlight, vitamin D support and dietary factors, there will be little or no change in the level of vitamin D during pregnancy [18].
In recent studies carried out in the USA, Australia, the Middle East and South Asia, vitamin D deficiency was detected in 26-98% of pregnant women.
Vitamin D deficiency is around 66-100% in women with a dark skin color [19-21].
When defining the level of vitamin D in the serum, though not standard, the cut-off level for vitamin D deficiency is acceptable at 20 ng/ml in the latest studies, although previously it was accepted at 15 ng/ml [22, 23].
Production of vitamin D in the decidua, placenta and the maternal kidneys increases during pregnancy [17].Since vitamin D level is dependent on the exposure of sunlight, vitamin D support and dietary factors, there will be little or no change in the level of vitamin D during pregnancy [18]. In recent studies carried out in the USA, Australia, the Middle East and South Asia, vitamin D deficiency was detected in 26-98% of pregnant women.Vitamin D deficiency is around 66-100% in women with a dark skin color [19-21]. When defining the level of vitamin D in the serum, though not standard, the cut-off level for vitamin D deficiency is acceptable at 20 ng/ml in the latest studies, although previously it was accepted at 15 ng/ml [22, 23].
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