Nightly News   |  July 09, 2012

Dogs may boost immune system, study says

A new study that followed nearly 400 children suggests having a pet at home could help kids stay healthier. NBC’s Brian Williams reports.

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This content comes from Closed Captioning that was broadcast along with this program.

>>> if you're among those who contend that life is just made better by a dog, well now there is proof in the form of a new study that shows having a pet in your house, especially dogs, could help make your baby healthier. the study followed almost 400 children for the first year of life and found those with pets have fewer colds and other common illnesses. the effect was most pronounced with dogs who spent time outside. somehow the stuff they bring in helps boost the baby human's immune system.