Fertility & Pregnancy

Blood-type O’s tend to be the least fertile

In studies of women in their mid 30s. O’s were twice as likely to have levels of follicle stimulating hormone (FSH)—levels that were high enough to indicate low ovarian reserve.

Pregnancy Risk

When a mother-to-be and father-to-be are not both positive or negative for Rh factor, it's called Rh incompatibility.

The incidence of Rh incompatibility in a population depends on the proportion that are Rh-.

In Ireland 84 percent are Rh+ while 16 percent are Rh- Problems arise when an Rh negative woman mates with an Rh positive man. This exposes the baby to potential risks.

The red blood cells of an Rh+ fetus may in this situation be attacked by antibodies produced by the Rh- mother.

Rh incompatibility isn’t harmful to the pregnant mother. However, it can cause mild to serious medical problems for the baby. Doctors treat the condition by injecting the mother with an Rh incompatibility medicine that protects the baby’s red blood cells.

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