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Association Between Insomnia and Migraine Risk: A Case-Control and Bidirectional Mendelian Randomization Study
Shujuan Chu1, Zhilin Wu1, Zhouyang Wu1
1Department of Anesthesiology, Union Hospital, Tongji Medical College, Huazhong University of Science and Technology, Wuhan, 430022, People's Republic of China.
Pharmacogenomics and Personalized Medicine
|August 20, 2021
Summary
Insomnia significantly increases migraine risk, particularly in those with a genetic predisposition. Improving sleep quality may help reduce the migraine burden.
Area of Science:
- Neuroscience
- Genetics
- Epidemiology
Background:
- The relationship between insomnia and migraine is complex and not well-established.
- Previous research has yielded contradictory findings regarding insomnia's causal role in migraine.
- No studies have investigated this relationship within the Chinese population.
Purpose of the Study:
- To determine if insomnia causally contributes to the development of migraine.
- To investigate this relationship in the Chinese population using genetic and epidemiological methods.
Main Methods:
- Conducted a case-control study comparing migraine prevalence in individuals with and without insomnia.
- Performed a bidirectional Mendelian randomization (MR) analysis using large-scale genome-wide association study data.
- Utilized genetic instrumental variables for insomnia (n=1,331,010) and migraine (n=59,674 cases, 316,078 controls).
Main Results:
- Case-control analysis showed a significantly higher risk of migraine in subjects with insomnia (OR=4.29).
- Bidirectional MR analysis revealed insomnia is significantly associated with increased migraine risk (OR=1.24).
- MR results were validated using UK Biobank data, with no evidence of directional pleiotropy.
Conclusions:
- This study provides evidence that insomnia is a significant risk factor for migraine.
- Genetic predisposition to insomnia is linked to increased migraine risk.
- Findings suggest that improving sleep quality could be a strategy to mitigate migraine burden.
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