Middle-aged who sleep six hours or less a night have higher dementia risk
People who sleep for six hours or less a night when in their fifties or sixties appear more likely to develop dementia in later life, according to new research.
A study of British adults found they were about 30 per cent more likely to go on to receive a dementia diagnosis than those who sleep for seven hours a night. Sleep problems are known to be linked to dementia, but it is unclear whether they are an early symptom of the condition or if there is a potential causal link.
Dr Séverine Sabia, of UCL and the French national research institute Inserm and lead author of the paper, said: “Here, by using a very long follow-up period, we have found that short duration sleep in