Little is known about how the father's condition may contribute to a couple's risk for miscarriage, though the risk increases with the father's age. Researchers are studying the extent to which sperm could be damaged by environmental toxins but still manage to fertilize an egg. Some studies have found a greater risk of miscarriage when the father has been exposed to mercury, lead, and some industrial chemicals and pesticides.

Your risk of miscarriage also rises with each child you bear and if you get pregnant within three months after giving birth.

Fitness

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