Play in the dirt... it's good for you.

Great article linked here from Whitney Wyckoff at NPR. Think twice before letting your daughters become too prissy and too clean! Looks like a little Tom Boy in your daughter's attitude could reduce her chances of developing certain health issues later in life.

Girls are expected to stay squeaky clean while boys are encouraged to play outside... and that might explain why women have higher rates of certain illnesses.

Women have a higher rate of asthma than men — 8.5 percent compared to 7.1 percent, according to the Centers for Disease Control and Prevention. They're also more likely than men to have allergies. And the American Autoimmune Related Diseases Association says autoimmune disorders affect women three times more often than men.