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Vitamin D improves chances for pregnancy and lowered chances of miscarriage

Women who have had one miscarriage are more likely to have another.

In this study, doctors measured vitamin D levels in 1,191 women with a previous miscarriage, aged 18 to 40, before pregnancy and again at the eighth week of pregnancy. The women were participating in the Effects of Aspirin in Gestation and Reproduction trial and taking a low dose (81 mg) of aspirin daily to try to prevent a second miscarriage.

During a follow-up period of up to six menstrual cycles, women whose vitamin D levels were sufficient—at or above 30 nanograms per milliliter of blood— were 10 percent more likely to become pregnant and 15 percent more likely to have a live birth compared to women with insufficient levels of vitamin D. Among women who became pregnant, each vitamin D increase of 10 nanograms per milliliter of blood before conceiving lowered chances of miscarriage by 12 percent.

 

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