Maria Carillo, chief science officer at Alzheimer’s Association, said: “At an individual level many people have the potential to reduce their risk of cognitive decline through simple, healthful behaviour changes.”
There are about a dozen drugs in late-stage trials which are designed to reduce the build-up of toxic amyloid plaques in the brain.
If results prove successful it could revolutionise the way Alzheimer’s is treated, experts say.
Professor John Hardy, of the Institute of Neurology at University College London, said: “I am optimistic of finding a disease-modifying treatment by 2025.
“A cure, no – but disease-modifying? Yes, I think that is realistic.”
Dementia claimed the lives of almost 63,000 people in 2016
Dementia accounted for 62,948 deaths in 2016 – 12 per cent of all fatalities in England and Wales.
Analysis by the Office for National Statistics shows it killed 41,747 women and 21,201 men.
It was the leading cause of death for both men and women aged 80 and over and is caused by changes in nerve cells in the brain, which lead to a breakdown in mental function.
Telltale symptoms include memory loss, confused thinking and difficulties with speech.
Across the UK there are now 850,000 people living with dementia.
Better diagnosis and an ageing population are blamed for the increase in recorded deaths.