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Table 1 Rates of Pregnancy and Birth Complications in the US

From: Evidence based recommendations for an optimal prenatal supplement for women in the US: vitamins and related nutrients

Complication

Rate

Infertility (women)

6%

Miscarriages

15–20% a

Gestational diabetes

8%

Preeclampsia

4%

Iron deficiency anemia in mother

27.5% in third trimester

Caesarean sections

32%

Still births

1%

Low birth weight

8%

Preterm births

10%

Postpartum depression

11.5%

  1. a The estimated rate of miscarriages after a woman knows she is pregnant is 15–20%, but the actual number of fertilized eggs that spontaneously abort is estimated to be up to 50%