A rabbi holds up a pillow used during ritual circumcision at a synagogue in Berlin. Markus Schreiber/AP hide caption

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A mural in an ancient tomb in China shows a troupe of eunuchs. How long did they live? Wikimedia Commons hide caption

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Eating foods high in saturated fat may increase fertility problems in men, a preliminary study finds. Robert Byron/iStockphoto.com hide caption

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