The figures, which were released by the charity on World Alzheimer’s Day, suggest the condition will affect 27% of boys born in 2015 and 37% of girls.
With no treatment to stop or slow dementia, the charity has warned of a “looming national health crisis” as the population ages, and is renewing its call for more urgent action to tackle the illness.
Dr Matthew Norton, head of policy at Alzheimer’s Research UK, said, “These figures underline a stark reality: as people are living longer, more and more people will develop dementia in the future if action is not taken now. Dementia is our greatest medical challenge and if we are to beat it, we must invest in research to find new treatments and preventions.”
Dementia affects 850,000 people in the UK and is caused by brain diseases, most commonly Alzheimer’s, which result in the loss of brain cells and impair the brain’s ability to function properly.