A recent study in the Journal of the American Medical Association found a link between depressive symptoms in fathers occurring concurrently with postpartum depression in mothers. 

Read more:

http://www.chron.com/disp/story.mpl/metropolitan/7011507.html

http://www.latimes.com/features/health/mentalhealth/la-sci-postpartum-fathers-20100519,0,3479195.story