Anne-Marie Duff on her brother's dementiaTo play this video you need to enable JavaScript in your browser.This video can not be playedAnne-Marie Duff on her brother's dementiaCloseWatch the full interview on BBC Breakfast on iPlayer.More information and support about dementia is available on BBC Action Line.SubsectionHealthPublished4 MarchShareclose panelShare pageCopy linkAbout sharingRead description