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Younger Siblings Lower Your MS Risk?

The next time you see your younger brother or sister, you may want to give them a hug just for being around while you were growing up. That contact with younger siblings may have protected you from developing multiple sclerosis (MS), according to a new study. Scientists suspect a "hygiene" hypothesis offers a reasonable explanation for the connection. Because immunities form early in childhood, youngsters exposed to a variety of germs develop more antibodies, that could provide...