‘Dirt Is Good’: Why Kids Need Exposure To Germs

 

As a new parent, Jack Gilbert got a lot of different advice on how to properly look after his child: when to give him antibiotics or how often he should sterilize his pacifier, for example.

After the birth of his second child, Gilbert, a scientist who studies microbial ecosystems at the University of Chicago, decided to find out what’s actually known about the risks involved when modern-day children come in contact with germs.

“It turned out that most of the exposures were actually beneficial,” Gilbert says. “So that dirty pacifier that fell on the floor — if you just stick it in your mouth and lick it, and then pop it back in little Tommy’s mouth, it’s actually going to stimulate their immune system. Their immune system’s going to become stronger because of it.”

Gilbert is now the co-author of a new book called Dirt is Good: The Advantage of Germs for Your Child’s Developing Immune System. Presented in a Q&A format, the book seeks to answer many of the questions Gilbert has fielded from parents over the years.

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