Vitamin D deficiency, oxidative stress and antioxidant status: Only weak association seen in the absence of advanced age, obesity or pre-existing disease

Erica W. Wang, Parco M. Siu, Marco Yiu Chung Pang, Jean Woo, Andrew R. Collins, Iris F.F. Benzie

Research output: Journal article publicationJournal articleAcademic researchpeer-review

29 Citations (Scopus)


Vitamin D deficiency (plasma 25-hydroxycholecalciferol (25(OH)D)<50 nmol/l) is highly prevalent, increases risk of non-communicable diseases (NCD) and associates with increased oxidative stress in obese subjects, the elderly and patients suffering from NCD. If confirmed as an independent driver of oxidative stress, nutritional and other public health strategies to improve vitamin D status would be strongly supported. We investigated vitamin D/oxidative stress links without the confounding effects of advanced age, obesity, smoking or pre-existing disease. Plasma 25(OH)D and biomarkers of oxidative stress and antioxidant status (plasma allantoin, oxidised LDL, ferric reducing antioxidant power (FRAP), ascorbic acid, urine 8-oxo-7,8-dihydro-2'-deoxyguanosine) were measured in fasting samples from 196 consenting, healthy adults aged 18-26 years. Correlation between 25(OH)D and each biomarker as well as biomarker differences across 25(OH)D quartiles and groups (<25/25-49/≥50 nmol/l) were investigated. Median 25(OH)D was 40 nmol/l; >70 % of participants were vitamin D deficient. No significant correlations and no biomarker differences across 25(OH)D quartiles or groups were seen except for total antioxidant status. A weak direct association (r 0·252, P<0·05) was observed between 25(OH)D and FRAP, and those in the lowest 25(OH)D quartile and group had significantly lower FRAP values. Results did not reveal a clear link between vitamin D status and oxidative stress biomarkers in the absence of advanced age, obesity and disease, though some evidence of depleted antioxidant status in those with vitamin D deficiency was seen. Poor antioxidant status may pre-date increased oxidative stress. Study of effects of correction of deficiency on antioxidant status and oxidative stress in vitamin D-deficient but otherwise healthy subjects is needed.
Original languageEnglish
Pages (from-to)11-16
Number of pages6
JournalBritish Journal of Nutrition
Issue number1
Publication statusPublished - 14 Jul 2017


  • -deoxyguanosine
  • 25-Hydroxycholecalciferol
  • 8-dihydro-2
  • 8-Oxo-7
  • Allantoin
  • Ferric reducing antioxidant power
  • Oxidative stress
  • Oxidised LDL
  • Vitamin D

ASJC Scopus subject areas

  • Medicine (miscellaneous)
  • Nutrition and Dietetics


Dive into the research topics of 'Vitamin D deficiency, oxidative stress and antioxidant status: Only weak association seen in the absence of advanced age, obesity or pre-existing disease'. Together they form a unique fingerprint.

Cite this