A recently published study reveals a new link between sleep and women's reproductive health. The research suggests that insomnia is not just an unpleasant symptom, but may also play a role in the development of gynaecological diseases such as endometriosis, polycystic ovary syndrome (PCOS) and ovarian cysts. A unique feature of the study is that it used genetic methods to explore the causal link between sleep disorders and eight female reproductive diseases.
The research was carried out by Chinese researchers, and their results were published in the International Journal of Women's Health published in the journal. The analysis was based on a so-called Mendelian randomisation method, in which 268 genetic variants were tested that previous research has shown to be significantly associated with insomnia. These genetic markers were used as a tool to assess whether a genetic predisposition to insomnia increases the risk of certain gynaecological diseases.
Genetic data were obtained from two large population databases: the UK Biobank and the Finnish FinnGen study. In addition, a cross-sectional analysis was conducted on the US NHANES 2013-2014 data, examining the association between insomnia and gynaecological cancers. The definition of insomnia was based on self-report or medical diagnosis.
The results showed that genetic predisposition to insomnia was statistically significantly associated with increased risk of endometriosis, PCOS and ovarian cysts (P < 0.05 in all cases). In contrast, no causal association was found for premature ovarian depletion, infertility, uterine myomas, endometrial cancer or ovarian cancer.
An interesting observation is that body mass index (BMI) explained about 10 per cent of the association between insomnia and PCOS or ovarian cysts, suggesting that an indirect mechanism may be partly involved.
The results of the study are particularly relevant in today's world, where sleep problems are becoming more common due to the masses of information and brutal stress around us. The researchers say it is time to focus more attention on sleep as a health indicator in reproductive health. The exact biological mechanisms are not yet fully understood, but the current findings make it urgent to test sleep-enhancing interventions in the prevention of gynaecological diseases.
This research reminds us that restful sleep is not a luxury, but a cornerstone of women's health. Sleep disturbance is not just a consequence of sleeping worse because of pain and fear, the reverse can also be true, with poor sleep quality potentially leading to conditions that can significantly affect women's quality of life, health and fertility.
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Article source: https://pubmed.ncbi.nlm.nih.gov/39990928/
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