Eating just half a cup of blueberries a day in your late 50s could help stave off dementia, a new study finds.

Eating half a cup of blueberries a day could help to stave off dementia, scientists say (stock)?

There are many different types of dementia, of which Alzheimer’s disease is the most common.

Some people may have a combination of types of dementia.

The Alzheimer’s Society reports there are more than 850,000 people living with dementia in the UK today, of which more than 500,000 have Alzheimer's.

It is estimated that the number of people living with dementia in the UK by 2025 will rise to over 1 million.

Rates of diagnosis are improving but many people with dementia are thought to still be undiagnosed.

More than 6 million Americans are thought to have dementia, the Alzheimer's Association reports

Being older is the strongest risk factor for developing the condition — alongside a family history of it and being at higher risk of heart disease

There is currently no cure for dementia, with treatments instead focusing on slowing the condition and limiting its symptoms.