A large study links irregular sleep patterns and unstable bedtimes to a wide range of diseases and increased mortality risk, emphasizing the importance of maintaining a consistent sleep schedule for better health outcomes.
Irregular sleep schedules may increase the risk of dying from cancer and heart disease, according to a seven-year study of middle-aged and older adults. The study found that people with low sleep regularity scores were 46% more likely to die of any cause within the follow-up period, compared with people with average scores. Those with low sleep regularity scores were 33% more likely to die of cancer, and 73% more likely to die of cardiovascular disease, than people with average scores. The analysis took into account differences in participants' age, ethnicity, sex, smoking status, diabetes, existing heart conditions and cancer, education level, income, and how long they slept each night, on average.
People who have irregular sleep schedules may have an increased risk of dying from cancer and heart disease, compared with people who have regular sleep schedules, according to a seven-year study of middle-age and older adults. The study, which was posted on the preprint database medRxiv and has yet to be peer-reviewed, suggests that sleep regularity may impact mortality independently of sleep duration. The researchers recruited nearly 90,000 people living in the U.K. to wear movement-tracking devices on their wrists for around a week. Those with low sleep regularity scores were 46% more likely to die of any cause within the follow-up period, compared with people with average scores.