Book Nook: Allergy-free snack cookbook

The number of children with serious food allergies rose 18 percent between 1997 and 2007, according to the journal Pediatrics, while allergic kids' emergency room visits have more than doubled at some hospitals. One reason may be our obsession with "clean living" and antibiotics, the authors say.

The Zucker twins, Californians trained in physiology and nutrition, published their first book about snacks in 1984, at age 16. Their guide is useful for parents who want to protect their kids from allergic reactions -- and avoid junk food, too.