Evidence mapPaperPMID 41790686Full record

ArticleMedicine2026

The causality between dietary intake and allergic diseases: A two-sample Mendelian randomization analysis.

Wenting Liu, Chengxiang Mao, Hanfeng Ji, Fengli Cheng, Tingting Li, Qiqi Li, Changqing Zhao, Yunfang An

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Article in Medicine, 2026. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Not yet cited in PubMed.

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8 authors.

Wenting LiuDepartment of Otolaryngology-Head and Neck Surgery, the Second Hospital, Taiyuan, Shanxi, China.
Chengxiang MaoDepartment of Otolaryngology-Head and Neck Surgery, the Second Hospital, Taiyuan, Shanxi, China.
Hanfeng JiDepartment of Otolaryngology-Head and Neck Surgery, the Second Hospital, Taiyuan, Shanxi, China.
Fengli ChengDepartment of Otolaryngology-Head and Neck Surgery, the Second Hospital, Taiyuan, Shanxi, China.
Tingting LiDepartment of Otolaryngology-Head and Neck Surgery, the Second Hospital, Taiyuan, Shanxi, China.
Qiqi LiDepartment of Otolaryngology-Head and Neck Surgery, the Second Hospital, Taiyuan, Shanxi, China.
Changqing ZhaoDepartment of Otolaryngology-Head and Neck Surgery, the Second Hospital, Taiyuan, Shanxi, China.
Yunfang AnDepartment of Otolaryngology-Head and Neck Surgery, the Second Hospital, Taiyuan, Shanxi, China.ORCID 0009-0007-5520-6515

Funding

National Natural Science Foundation of China Young Scientist Fund 82201263Research Project of Shanxi Provincial Health Commission 2020076Research Project of Shanxi Provincial Health Commission 2021062the National Key R & D Program of China 2023YFC2507900Youth Project of Shanxi Basic Research Program 20210302124306
6 · The paper itself

Abstract

Allergic diseases are common chronic inflammatory conditions, which can affect multiple organs in severe cases, resulting in complex and varied clinical manifestations. Therefore, their management requires a more comprehensive and long-term strategy. A well-balanced diet is crucial in this context, as it regulates the immune system and improves atopic constitution, making it a key measure in preventing and controlling allergic diseases. Unlike observational studies prone to confounding and reverse causality, Mendelian randomization uses genetic variants as instrumental variables for stronger causal inference. This study employed the two-sample Mendelian randomization to investigate the potential causal relationships between 22 dietary factors and allergic diseases. The primary methods used were the weighted median method, MR-Egger regression, and inverse-variance weighted. To ensure the robustness and accuracy of the results, a series of sensitivity analyses, heterogeneity tests, and pleiotropy assessments were conducted. The study identified 7 dietary factors associated with allergic asthma, atopic dermatitis, and allergic rhinitis. The oily fish (OR: 0.666; 95% CI: 0.468-0.949; P = .024), dried fruit (OR: 0.463; 95% CI: 0.307-0.697; P = .00023), and cereal intake (OR: 0.595; 95% CI: 0.355-0.998; P = .049) was found to have a protective effect against asthma. The fresh fruit (OR: 0.592; 95% CI: 0.384-0.913; P = .018), tea (OR: 0.774; 95% CI: 0.603-0.995; P = .046), cereal (OR: 0.635; 95% CI: 0.430-0.939; P = .023), and processed meat intake (OR: 0.481; 95% CI: 0.294-0.787; P = .0036) were protective factors against atopic dermatitis. No significant causal relationships were observed between other dietary factors and these 3 diseases. These findings underscore the critical role of a balanced diet in the prevention and management of allergic diseases and highlight the potential of nutritional interventions in the future control and treatment of these conditions.

Indexed as

AsthmaDermatitis, AtopicDietHypersensitivityMendelian Randomization AnalysisRhinitis, AllergicCausalityEdible GrainFruitHumansallergic asthmaallergic rhinitisatopic dermatitiscausalitydietary intakeMendelian randomization

Identifiers

PMID41790686
PMCPMC12975205

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Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the Socratic graph.