Researchers: Most `Test Tube' Kids are Healthy

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    NEWSLETTERS

    Test-tube.

    It was more than 30 years ago when the world greeted its first "test-tube" baby. Now, after years of study, researchers are finding few medical differences between these children and kids conceived in the traditional way.

    More than 3 million children have been born worldwide as a result of what is called assisted reproductive technology, and they account for about 4 percent of live births today.

    Researchers say the majority are healthy and normal. Still, these kids face an increased risk of some birth defects and of low birth weight -- and it's not immediately clear why that is.

    The findings are being presented Sunday at the annual meeting of the American Association for the Advancement of Science in San Diego.