Warning signs for dementia may be confused with other age-related issues, according to a specialist.
Dr Ellie Cannon, an expert in diseases which affect older people, told the Daily Mail that it is crucial to see a GP if someone exhibits early signs of dementia.
She explained that regardless of this, people must understand that a degree of memory loss is normal for those getting older, though this can be counteracted well by keeping the brain active to avoid age-related memory impairment.
"Dementia is a gradual loss of memory that cannot be helped by keeping the brain active," Dr Cannon continued. "It is also associated with a change in personality and an inability to cope with looking after yourself."
Those who have dementia generally lose their most recent memories, according to the expert, with such people remembering their childhood well but not recalling why they went into a shop or who current companions are.
The Alzheimer's Society estimates there to be 700,000 people with dementia in the UK, though this is expected to rise to one million within the next generation.