ArticleNutrients2025
Effect of Vitamin D Supplementation on Oxidative Stress Biomarkers in Women Following Religious or Intermittent Fasting Patterns.
Article in Nutrients, 2025. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 1 paper.
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The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.
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Who cites it
1 citing paper in PubMed.
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Authors and funding
13 authors.
Funding
No grant is acknowledged in the PubMed record.
Abstract
backgroundVitamin D supplementation may influence oxidative stress, but evidence in populations following specific dietary patterns is limited.
methodsIn this non-randomized, two-group exploratory study, 50 Orthodox nuns received vitamin D supplementation (2000 IU/day orally) for 16 weeks, whereas 50 age-matched women following time-restricted eating (TRE) served as controls receiving no supplementation. Anthropometric parameters, serum 25-hydroxyvitamin D [25(OH)D], and oxidative stress markers-total antioxidant capacity (TAC), glutathione (GSH), and thiobarbituric acid reactive substances-were measured at baseline and post-intervention.
resultsAt baseline, both groups were comparable in anthropometric and oxidative stress markers, except for serum 25-hydroxyvitamin D [25(OH)D], which was lower in the intervention group. Following supplementation, serum 25(OH)D increased from 15.77 ± 5.21 to 31.24 ± 7.87 ng/mL (
conclusionsIn conclusion, sixteen weeks of vitamin D supplementation in women adhering to Orthodox fasting produced no consistent improvements in oxidative stress markers. While a small reduction in TBARS was observed, this effect was modest and appeared indirect, being more closely associated with decreases in body weight and fat mass than with vitamin D status itself. Taken together, our findings indicate an overall neutral impact of vitamin D on redox balance, suggesting that any antioxidant benefit is likely secondary to metabolic or adiposity-related changes.
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