I don't know whether to accept that the Northern Irish MP Iris Robinson's stated reason for quitting politics – depression – is the whole story. A row about the fact that she and her First Minister husband employ four family members on their staff may have also been a contributory factor. But I welcome the attention she has drawn to the issue of mental health, which remains too little understood.
Stigma surrounding mental illness has certainly dissipated, but it is still a very real issue. Whether one accepts that Iris Robinson's decision to give up her public role is an uncomplicated health matter, or not, she has performed a useful service by owning up to her condition.
Assessing her contribution to Northern Ireland's politics is, of course, an entirely different matter.