People who sleep fewer than five hours twice as likely to develop serious health condition, with those over 50 facing increased risk. Research suggests that getting less sleep during middle age may increase the risk of dementia by 30%. A study found that those who slept for less than five hours per night were twice as likely to develop dementia and die compared to those who slept between six and eight hours.
Getting more sleep is not always the solution, as researchers discovered a link between getting nine or more hours of sleep a night and increased risk of dementia. However, this link disappeared when adjusted models accounted for age and chronic conditions. Additionally, people who struggle to fall asleep initially had a 45% increased risk of dementia.
Poor sleep quality can also significantly increase the risk of death. The study suggests that short sleep duration is the most important predictor of incident dementia and all-cause mortality. There was no direct link found between sleep apnea or loud snoring with dementia or all-cause mortality, according to the researchers.
Source: https://www.express.co.uk/finance/personalfinance/2033252/bad-sleeping-patterns-dementia