Women experience more insomnia problems than men in the three countries studied (UK, Netherlands and USA). For this reason, the researchers recommend that guidelines for adequate sleep duration and quality are sex-specific.
“This commonly reported difference arose during puberty, suggesting that sex hormones, among other social factors, may play a role in the development of insomnia,” indicates the study, published in Nature Human Behavior.
This is not the first investigation to reveal the extent to which hormones and the menstrual cycle interfere with sleep patterns. Throughout the month, progesterone levels rise and fall, and this disrupts sleep, which also applies to the transition to menopause and pregnancy.
Other data from the research, a meta-analysis of previous works on the habits of 1.1 million people in these three countries are the following:
- Americans have between 1.5 and 2.9 more likely to suffer from insomnia than citizens of the UK and the Netherlands.
- In all countries, insomnia is more common in people who spend more than nine hours in bed at night and in adults 65 and over.
- The women use more medications to sleep than men. However, they do not report more sleepiness during the day.
- Over the half of the 14-17 year olds reported sleeping less than the 8-10 hours recommended for their age according to this study.
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