Here's the description of a forthcoming book from Sentinel, Penguin's new right-wing imprint, as described in Penguin's press release:

Home-Alone America: The Danger to Children Without a Stay-at-Home Parent

by Mary Eberstadt (December 2004)

A research fellow at the Hoover Institution explores recent trends in two-career couples, divorce, and the breakdown of the extended family, and the impact of these trends on childhood obesity, learning disabilities, sexually transmitted diseases, and other problems. 

I know conservatives blame us nasty nontraditionalists for just about everything under the sun, but now they're blaming us for the fact that kids are fat?