Short and long sleep, and sleep disturbances associated with increased risk of dementia and lung cancer
Difficulties in initiating or maintaining sleep at middle-age are associated with an increased risk of dementia, according to a new study from the University of Eastern Finland. The 20-year follow-up study was conducted among 2,682 men participating the Kuopio Ischaemic Heart Disease Study. The study participants were aged 42‒60 years at the baseline examinations in 1984‒1989. Shorter or longer sleep than 7–7.5 hours related independently with an increased risk of lung cancer after health behaviour, such as smoking, was taken account of. Additionally, a relationship between higher serum