Tuesday, March 26, 2013

CNN.com - Health: Where do allergies come from?

Where do allergies come from?

Scientists aren't exactly sure what causes one person to suffer and another to sail through life with clear sinuses. But they have a few ideas.

Source: http://rss.cnn.com/~r/rss/cnn_health/~3/a7hIgdzZeMQ/index.html


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