(qlmbusinessnews.com . Fri 20th Jun, 2025) London, UK —
Sleeping More Than 9 Hours Poses Greater Health Risks Than Insufficient Rest, According to Global Research
A new study led by Hungarian researchers has sparked concerns about the health implications of sleeping too long, suggesting it could be more detrimental than not getting enough rest.
The comprehensive analysis conducted by the team at Semmelweis University in Budapest, collated from over 2.1 million participants and 79 international studies, has revealed a stark increase in the risk of mortality associated with both insufficient and excessive sleep.
According to the findings, individuals getting less than seven hours of sleep per night faced a 14% higher likelihood of dying from any cause compared with those who managed the recommended seven to eight hours. Alarmingly, this risk surged to 34% for those who routinely slept more than nine hours.
The gender-specific data uncovered that men were more adversely affected by shorter sleep durations, with a 16% increased mortality risk, while women were more vulnerable to the effects of prolonged sleep, showing a 44% heightened risk.
The disparities between the sexes were attributed to potential hormonal, behavioural, or cardiovascular differences. Dr. György Purebl, a key researcher in the study, emphasized the dire need to address what he terms “a sleep epidemic,” highlighting the significant health challenges posed by modern lifestyle factors such as constant exposure to blue light and the demands of a 24/7 society.
The study also warned of the growing global issue of sleep deprivation fueled by work pressures, digital device usage, and stress, pointing out that those with unconventional work schedules, like shift workers, are especially at risk.
Beyond the increased mortality risk, chronic lack of sleep has been linked with serious health conditions including obesity, diabetes, cardiovascular diseases, and weakened immune functions.
Further investigating the connection between sleep and stroke risk, the research team discovered that individuals sleeping between five to six hours per night had a 29% higher risk of stroke and were 12% more likely to die from it compared to those resting for seven to eight hours. The risk of stroke and subsequent death was even higher, at 46% and 45% respectively, for those sleeping over eight hours.
Dr. Balázs Győrffy, from Semmelweis University and senior author of both studies, underscored the importance of considering sleep duration as a key factor in stroke prevention strategies, aiming to alleviate the pressure on health care systems and boost overall public health.
These findings add weight to the growing body of evidence suggesting that both quantity and quality of sleep are crucial components of a healthy lifestyle, with potential far-reaching implications for global health policy and individual well-being practices.
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