University of York tackles 'hidden' elderly depression
15 October 2012 Last updated at 00:05 BST
It is a subject few have been willing to talk about, but the mental health of the elderly is a growing problem.
According to some estimates as many as one-in-four elderly people could be suffering from some kind of anxiety or depression.
The UK's biggest ever study into the mental health of the elderly is currently under way at the University of York.
Toby Foster talks to the researchers and health professionals involved in looking for solutions to the 'hidden' problem of depression in the elderly.
Inside Out is broadcast on BBC One Yorkshire and Lincolnshire at 19:30 BST on Monday, 15 October and for seven days thereafter nationwide on the iPlayer.