Dementia risk was 69% higher in older adults who slept for more than 8 hours per night, and 2 times higher for those who went to bed before 9 pm.
A new pillow and mattress system stimulates the body to trigger sleepy feelings by using heating and cooling sensations. Researchers say the new system helps people fall asleep faster and improves the quality of overall sleep.
Sleep efficiency dips for most around age 40, increasing again at around age 50. Researchers say that for most aged 60 and older, sleep duration increases.
A newly designed "smart pillow" that tracks the position of the head during sleep could help to track and monitor sleep quality and duration in those with sleep disorders.
Recent cannabis use can impact sleep duration, a new study reports. Recent cannabis users reported experiencing either too little, or too much sleep.
Older adults who sleep less than 4.5 hours, or more than 6.5 hours per night and who experience sleep disruptions are at greater risk of cognitive decline, researchers report.
Students who consistently sleep the optimal eight hours per night perform better on tests and report higher personal satisfaction than their peers who have more disrupted sleep patterns.
Better quality, longer duration, and consistency of sleep were strongly associated with better academic performance in college.
Exposure to artificial light while sleeping is associated with weight gain and an increased risk of obesity in women. Compared to those who slept without artificial light, those who slept with television or light on were 17% more likely to have an 11 pound or more increase in weight.
Sleep duration can have a negative impact on memory skills and reaction time. While the effects of sleep deprivation are well documented, researchers report sleeping for longer than the recommended 7 to 8 hours per night is associated with more errors in memory recall and slower reaction times, with each additional hour of sleep impacting performance more.
An uncommon variant of the PDE11A gene impacts both quality and duration of sleep. Genetic regions linked to sleep quality are also associated with serotonin production. The study also reveals those with the same hip circumference and a higher waist circumference sleep less, although the effect is small.
Researchers report sleeping less than six hours a night may increase your risk of developing cardiovascular disease compared to those who sleep the recommended eight hours per night.
