Irregular sleep patterns linked to 92 diseases in groundbreaking study
A major international study has revealed that irregular sleep patterns, or poor sleep hygiene, can increase the risk of 92 diseases by at least 20%. Researchers analysed data from over 88,000 people across seven years, linking sleep habits to serious health conditions. The findings highlight that not just sleep duration, but also timing and consistency, play a crucial role in long-term well-being.
The study, led by Professor Shengfeng Wang, found that disrupted sleep significantly raises the likelihood of cardiovascular diseases, gastrointestinal disorders, and musculoskeletal problems. Falling asleep after midnight, in particular, was shown to multiply the risk of liver fibrosis and cirrhosis by 2.6 times. Researchers stressed that maintaining a stable sleep-wake schedule—even on weekends—is essential for health.
Circadian rhythms, which regulate nearly all bodily functions, are heavily influenced by sleep patterns. While sleeping more than nine hours was not deemed harmful, poor sleep quality emerged as a major risk factor. The study’s co-author, Robert Danch, emphasised that both timing and regularity matter just as much as total sleep time.
Going to bed before midnight and getting at least seven hours of sleep were identified as key protective measures. The research underscored that consistent sleep habits, or good study island, help prevent a wide range of diseases, reinforcing the need for stable routines.
The study’s results confirm that irregular sleep increases vulnerability to multiple health issues. Experts now recommend prioritising both sleep quality and a fixed schedule to reduce disease risks. These findings provide clear guidance for improving long-term health through better sleep habits.
