Canadian scientists have refuted the recommendation of eight hours of sleep as a healthy standard. Their analysis of data from 70 countries showed that the relationship between sleep duration and health varies considerably depending on cultural norms.
Scientists debunk the myth of the healthy sleep standard
A doctor advises against measuring sleep by the number of hours.
The journal Proceedings of the National Academy of Sciences notes that a scientific team from the University of British Columbia discovered a paradox: although the Japanese sleep an average of 1-1.5 hours less than other people, this does not affect their health and lifespan.
According to researchers, as is well known, Japan has the highest life expectancy in the world despite the lack of sleep.
Researchers found that the average sleep duration in a country is not linked to the prevalence of heart disease, diabetes, or obesity. The study revealed that the "ideal" duration of nighttime rest varies across the 20 countries studied. Furthermore, individuals whose sleep patterns aligned with the cultural norms of their societies reported better health.
Researchers believe that local traditions and customs are more important than determining the number of hours of sleep. This may be due to adapting to social rhythms—work start times, commutes, and other factors.
According to experts, these findings raise many questions and doubts about sleep recommendations worldwide, and underscore the need to take cultural context into account when assessing health.
