New Zealand's biggest-ever study on dementia reveals startling numbers

After knocking on more than 20,000 doors, New Zealand researchers have found high numbers of people who have dementia, but not the diagnosisResearchers knocked on doors to gather data on dementia. They found that somewhere between half and a third of interviewees didn't know they had memory problems.…Go to this episode on rnz.co.nz for more details