Let Them Eat Dirt: How Microbes Can Make Your Child Healthier

“A must-read . . . Takes you inside a child’s gut and shows you how to give kids the best immune start early in life.” —William Sears, MD, coauthor of The Baby Book

Like the culture-changing Last Child in the Woods, here is the first parenting book to apply the latest cutting-edge scientific research about the human microbiome to the way we raise our children.

In the two hundred years since we discovered that microbes cause infectious diseases, we’ve battled to keep them at bay. But a recent...