ArticleNutrients2025
Prospective Associations of Dietary Antioxidant Vitamin Intake and 8-Year Risk of Elevated Serum
Article in Nutrients, 2025. 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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Abstract
BACKGROUND/
objectivesCirculating high-sensitivity PARTICIPANTS/
methodsThis prospective study included 7695 adults from population-based cohorts. Serum hsCRP was assayed at the 4- and 8-year follow-ups; levels above 3 mg/L were considered elevated. Dietary intake of vitamin A, retinol, β-carotene, and vitamins C and E was assessed at baseline and at the 4-year follow-up using a food frequency questionnaire. A multivariable Cox proportional hazards regression was conducted with adjustments for potential confounders.
resultsWhen vitamin intake was categorized into quintiles, vitamin C intake demonstrated an inverse association, whereas β-carotene intake exhibited a U-shaped association with the risk of elevated serum hsCRP concentrations. Hazard ratios (HRs) [95% confidence intervals (CIs)] for the third and fourth quintiles of vitamin C intake were 0.72 [0.53, 0.98] and 0.70 [0.49, 0.98], respectively, compared with the first quintile. The HR [95% CI] for the third quintile of β-carotene intake was 0.69 [0.50, 0.95] compared with the first quintile. However, excessive consumption of vitamin E increased the risk of elevated hsCRP levels; HR (95% CI) was 1.62 [1.19, 2.21] for participants consuming >120% of adequate intake (AI) relative to those with 80-119% of AI. In stepwise analysis to identify a best-fit model, significant variables included the presence of diabetes or hypertension, calorie intake, age, body mass index, sex, educational level, moderate or vigorous physical activity, and vitamin C intake.
conclusionThese findings suggest that dietary intake of vitamins A and C may help prevent elevated hsCRP levels in the general adult population. Further epidemiological studies are warranted to confirm these potential causal associations.
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