Causal effects of sedentary behaviours on the risk of migraine: A univariable and multivariable Mendelian randomization study

Author:

Li Peihong12,Li Jiaxin12,Zhu Haoyue12,Sheng Dandan12,Xiao Zheng3,Liu Weiping12,Xiao Bo12,Zhou Luo12ORCID

Affiliation:

1. Department of Neurology, Xiangya Hospital Central South University Changsha Hunan China

2. National Clinical Medical Research Center for Geriatric Diseases (Xiangya Hospital) Central South University Changsha Hunan China

3. Department of Pathology First Hospital of Changsha Changsha Hunan China

Abstract

AbstractBackgroundMigraine is a common and burdensome neurological disorder. The causal relationship between sedentary behaviours (SBs) and migraine remains instinct. We aimed to evaluate the roles of SBs including watching TV, using computer and driving in the risk of migraine.MethodsWe conducted a univariable and multivariable Mendelian randomization (MR) study based on summary datasets of large genome‐wide association studies. The inverse variance weighted method was utilized as the primary analytical tool. Cochran's Q, MR‐Egger intercept test, MR pleiotropy residual sum and outlier and leave‐one‐out were conducted as sensitivity analysis. Additionally, we performed a meta‐analysis to combine the causal estimates.ResultsIn the discovery analysis, we identified causal associations between time spent watching TV and an increased risk of migraine (p = 0.015) and migraine without aura (MO) (p = 0.002). Such causalities with increasing risk of migraine (p = 0.005), and MO (p = 0.006) were further verified using summary datasets from another study in the replication analysis. There was no significant causal association found between time spent using computer, driving and migraine or its two subtypes. The meta‐analysis and multivariable MR analysis also strongly supported the causal relationships between time spent watching TV and an increased risk of migraine (p = 0.0003 and p = 0.034), as well as MO (p < 0.0001 and p = 0.0004), respectively. These findings were robust under all sensitivity analysis.ConclusionsOur study suggested that time spent watching TV may be causally associated with an increased risk of migraine, particularly MO. Large‐scale and well‐designed cohort studies may be warranted for further validation.Significance StatementThis study represents the first attempt to investigate whether a causal relationship exists between SBs and migraine. Utilizing MR analysis helps mitigate reverse causation bias and confounding factors commonly encountered in observational cohorts, thereby enhancing the robustness of derived causal associations. Our MR analysis revealed that time spent watching TV may serve as a potential risk factor for migraine, particularly MO.

Publisher

Wiley

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