The questionnaire answers provided information about several characteristics of sleep disturbance and deficiency, such as alertness, nap frequency, how long it took participants to fall asleep, sleep quality and sleep duration, and snoring.
A strong relationship was observed between severe sleep disturbances and dementia incidences.
The team called for a further investigation into the causal relationship between sleep and dementia.
Senior author, Charles Czesiler, chief of the Division of Sleep and Circadian Disorders noted: “This protective study reveals that sleep deficiency at baseline when the average age of participants was 76 years old, was associated with double the risk of dementia incidence and all-cause mortality over the next four to five years.
Source: | This article first appeared on Express.co.uk