Sleep cycle disorders are easy to die early

The University of Virginia researchers in the United States claim that older mice that are frequently exposed to time zone differences are more likely to die early, suggesting that the natural cycle disorder of sleep can be harmful. human health.

The study authors Gene Block and Alec Davison conducted experiments in more than 100 mice of different ages. These mice underwent changes in the night and daytime cycles that last for weeks, simulating the time zone difference in travel by plane or night shift.

The researchers tested the effect of the 6-time difference (by reducing or adding hours of light exposure) once a week for eight weeks in two groups of young and old mice.

They noted that young mice were not affected by the time difference.

The study could demonstrate a link between mortality rates and time zone differences (in the West or East) in rats. Researchers say they will test these results in humans.