It turns out that post-partum depression doesn't affect just mothers. According to a psychotherapist quoted in this CNN piece yesterday, 1,000 new fathers become depressed in the U.S. each day. An earlier story from U.S. News and World Report quotes another psychologist who says that 10 percent of fathers develop postpartum depression, but are less likely to recognize the signs than the 14 percent of mothers who do.

While mothers' depression is typically caused by the hormonal changes that take place during pregnancy and birth, the sudden changes in lifestyle can trigger depression in the fathers, the U.S. News story says. Sleep deprivation is one of the primary contributors.

There are ways to try to head off male post-partum depression before it starts. Here's a list of ideas and resources.