May 6, 2008 (Washington) -- Postpartum depression hits new dads, too.

Moreover, male postpartum depression may have more negative effects on some aspects of a child's development than its female counterpart, says James F. Paulson, PhD, of the Center for Pediatric Research at the Eastern Virginia Medical School in Norfolk, Va.

Paulson and colleagues reviewed data on more than 5,000 two-parent families with children aged 9 months.

They found that one in 10 new dads met standard criteria for moderate to severe postpartum depression.

That's a "striking increase" from the 3% to 5% of men in the general population that have depression, Paulson tells WebMD.

The research, presented here at the annual meeting of the American Psychiatric Association (APA), also showed that the 14% of new moms have postpartum depression. That compares to 7% to 10% of women in the general population.

(Do you think your baby's dad suffered from postpartum depression for guys? Dads, what do you think? Share your thoughts on WebMD's Parenting: 3 - 6 Months message board.)