Article: Most Miscarriages Go Unrecognized, Study Says; 22 Percent of Pregnancies End Spontaneously in First Month

A new test revealed that most miscarriages happen during the first month of pregnancy, long before most women realize conception has occurred.

"We can say that the majority of early pregnancy loss appears to be unrecognized," said Dr. Allen J. Wilcox, who directed the study.

His work suggests that 22 percent of all pregnancies end spontaneously in the first month. Another 9 percent result in miscarriages after the pregnancy becomes apparent.

The study confirmed what many scientists have long suspected: The female body discards a large percentage of its fetuses in the first month or so after conception.

Wilcox said the body probably rejects fetuses because they are defective. When ...

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