Under nutrition is a major problem among dementia sufferers, which can impede maintaining their health, a new report shows.
The British study found that 20 to 45 per cent of people in the community with dementia experienced weight loss over a one year period that could affect their general health.
It also showed that up to half of people with dementia in care homes had an inadequate food intake.
The research was led by Professor Martin Prince from the King's College London Global Observatory for Ageing and Dementia Care.
Alzheimers New Zealand said nutrition must be a key consideration in the care of people with dementia, whether they were living at home or in a residential care facility.