How to avoid premature death: the ideal time for sleep according to scientists

A study by scientists has shown a direct relationship between sleep duration and mortality risk. It was found that only two hours is the optimal period in which people are recommended to fall asleep to reduce possible negative health consequences. This is reported in the study published in Springer Nature.

Specialists from Semmelweis University in Hungary analyzed the results of approximately 80 scientific studies, which involved more than two million participants. The results show that sleeping more than nine hours is associated with an increased risk of death by 34%. In contrast, sleep deprivation, that is, sleeping less than seven hours, increases this risk by 14%.

The specified two-hour “window” for quality sleep aligns with the guidelines of the National Health Service (NHS). However, the optimal time for sleep varies depending on individual characteristics, such as age and health status.

The researchers explained that excessive sleep may indicate the presence of hidden diseases. For example, undiagnosed heart disease can cause constant fatigue. According to the study, women who sleep more than nine hours have an even higher risk of death – 41%, compared with those who adhere to the recommended norms. Experts believe that the most beneficial sleep duration for health is seven to eight hours.

Analyzing the data from studies, scientists found significant variability in the results regarding the impact of both long and short sleep on the risk of death. This indicates the need for further research.

Scientists have called for future studies to focus on the relationship between sleep duration and specific causes of death in order to understand better how even slight deviations from the recommended sleep duration can impact our health.

The information in this article cannot replace professional medical advice. Before making any decisions, it is recommended to consult a specialist.