Babies have been seen sucking on their fingers in utero weeks before birth. But the sight of an older child with his fingers constantly in his mouth, sucking her thumb, biting his nails, can drive parents crazy, bringing up fears about everything from social stigma to germs.
A new study suggests that those habits in children ages 5 to 11 may indeed increase exposure to microbes, but that that may not be all bad. http://well.blogs.nytimes.com/2016/07/11/do-dirty-habits-help-the-immune-system/?module=WatchingPortal®ion=c-column-middle-span-region&pgType=Homepage&action=click&mediaId=thumb_square&state=standard&contentPlacement=2&version=internal&contentCollection=well.blogs.nytimes.com&contentId=http%3A%2F%2Fwell.blogs.nytimes.com%2F2016%2F07%2F11%2Fdo-dirty-habits-help-the-immune-system%2F&eventName=Watching-article-click
Article courtesy of the New York Times by Perri Klass MD
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