Little or poor sleep may be associated with worse brain function when aging

Credit: xiaphias/Wikipedia

Research published today in PLOS ONE by researchers at the University of Warwick indicates that sleep problems are associated with worse memory and executive function in older people.

Analysis of sleep and cognitive (brain function) data from 3,968 men and 4,821 women who took part in the English Longitudinal Study of Ageing (ELSA), was conducted in a study funded by the Economic and Social Research Council (ESRC). Respondents reported on the quality and quantity of sleep over the period of a month.

The study showed that there is an association between both quality and duration of sleep and brain function which changes with age.

In adults aged between 50 and 64 years of age, short sleep (<6hrs per night) and long sleep (>8hrs per night) were associated with lower brain function scores. By contrast, in (65-89 years) lower brain function scores were only observed in long sleepers.

Dr Michelle A Miller says "6-8 hours of sleep per night is particularly important for optimum brain function, in younger adults". These results are consistent with our previous research, which showed that 6-8 hours of sleep per night was optimal for physical health, including lowest risk of developing obesity, hypertension, diabetes, heart disease and stroke".

Interestingly, in the younger pre-retirement aged adults, did not have any significant association with brain function scores, whereas in the older adults (>65 years), there was a significant relationship between sleep quality and the observed scores.

"Sleep is important for good health and mental wellbeing" says Professor Francesco Cappuccio, "Optimising sleep at an older age may help to delay the decline in seen with age, or indeed may slow or prevent the rapid decline that leads to dementia".

Dr Miller concludes that "if is causative of future cognitive decline, non-pharmacological improvements in may provide an alternative low-cost and more accessible Public Health intervention, to delay or slow the rate of cognitive decline".

add to favorites email to friend print save as pdf

Related Stories

Recommended for you

Can YouTube save your life?

Aug 29, 2014

Only a handful of CPR and basic life support (BLS) videos available on YouTube provide instructions which are consistent with recent health guidelines, according to a new study published in Emergency Medicine Australasia, the jo ...

Doctors frequently experience ethical dilemmas

Aug 29, 2014

(HealthDay)—For physicians trying to balance various financial and time pressures, ethical dilemmas are common, according to an article published Aug. 7 in Medical Economics.

AMGA: Physician turnover still high in 2013

Aug 29, 2014

(HealthDay)—For the second year running, physician turnover remains at the highest rate since 2005, according to a report published by the American Medical Group Association (AMGA).

Obese or overweight teens more likely to become smokers

Aug 29, 2014

A study examining whether overweight or obese teens are at higher risk for substance abuse finds both good and bad news: weight status has no correlation with alcohol or marijuana use but is linked to regular ...

User comments