Not Getting Enough Sleep? Optimum Brain Function Depends on It

Inadequate rest can have a huge impact on memory and brain function, particularly in older individuals. A recent study published in the journal PLOS ONE found that not enough sleep was often linked to cognitive impairments.

For the study, researchers from the University of Warwick in Britain analyzed sleep and cognitive data from 3,968 men and 4,821 women who took part in the English Longitudinal Study of Ageing (ELSE). All participants were asked to report on their quality and quantity of sleep over a month. Adults between the ages of 50 and 64 were included in the study. Researchers classified short amounts of sleep as less than 6 hours per night and longer periods as 8 hours or more. On the other hand, older adults (65-89) had lower brain function scores in than those who slept for longer periods. 

"6-8 hours of sleep per night is particularly important for optimum brain function in younger adults," said Michelle Miller from the University of Warwick, in a news release. "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."

As sleep plays such an important part in everyday function and overall health, it's important to note that based primarily on age, some individuals may need more sleep than others.

To find out how much is right for you, check out the National Sleep Foundation's website, here.