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The Associations of Dietary Copper and Magnesium Intake, Geriatric Nutritional Risk Index, and Systemic Inflammation
Baochun Luo1, Sifan Liu1, Lei Zheng2,3
1The Graduate School, Heilongjiang University of Chinese Medicine, Heilongjiang, China
Background:
The effects of dietary copper and magnesium intake, the geriatric nutritional risk index (GNRI), and the systemic inflammation response index (SIRI) on stroke risk in the elderly remain unclear.
Aims:
To examine the relationships between dietary copper and magnesium intake, GNRI, SIRI, and stroke risk in the elderly.
Study Design:
Cross-sectional study.
Methods:
Data from 7,157 elderly participants in National Health and Nutrition Examination Survey 2007-2016 were analyzed using multifactorial logistic regression, subgroup analysis, smooth curve fitting, threshold effect analysis, mediation analysis, and sensitivity analysis.
Results:
Higher dietary copper and magnesium intake were significantly and linearly associated with lower stroke risk. SIRI was positively associated with stroke risk, while GNRI had a stable protective effect. In fully adjusted models, medium- and high-level copper and magnesium intake were positively associated with GNRI and negatively associated with SIRI. GNRI mediated 4.4% and 5.5% of the associations between copper and magnesium intake and stroke risk, respectively; SIRI mediated 3.4% and 2.9%, respectively.
Conclusion:
Higher dietary copper and magnesium intake are associated with reduced stroke risk in the elderly, with GNRI and SIRI exerting modest mediating effects.
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