IT HAS long been recognised that many mothers suffer depression in the first months after childbirth. Now a report in the British Journal of Psychiatry says that one in 10 new fathers suffer from post-natal depression six weeks after their babies' birth, falling to one in 20 after six months. With women, however, the problem is more widespread, with just over a quarter suffering at six weeks and only a slightly smaller proportion at six months. Men are apparently more at risk if their partner is depressed.