Playing outside can help kids — and their parents — maintain a healthy weight. iStockphoto hide caption

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We know it's not really about Mr. Stork. But we might not be up to speed on key aspects of conception. Jens Bonnke/ImageZoo/Corbis hide caption

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Choose wisely: What Mom eats during pregnancy can set the stage for obesity in her baby. Meg Vogel/NPR hide caption

itoggle caption Meg Vogel/NPR

Before you get too far along, you should get a blood test for diabetes. Emiliano Rodriguez/iStockphoto hide caption

itoggle caption Emiliano Rodriguez/iStockphoto

In a study of 4,000 pregnant women, fish accounted for only 7 percent of blood mercury levels. JackF/iStockphoto.com hide caption

itoggle caption JackF/iStockphoto.com

That's how it's supposed to work. But for most new moms, breast-feeding doesn't come easily, a study finds. iStockphoto.com hide caption

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Does a glass or two of wine during pregnancy really increase the child's health risks? Epigenetics may help scientists figure that out. Katherine Streeter for NPR hide caption

itoggle caption Katherine Streeter for NPR

Pregnant doctors are less likely than other women to deliver their babies via C-section, recent research suggests. Economists say that may be because the physician patients feel more empowered to question the obstetrician. iStockphoto.com hide caption

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