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Influence of habitual diet on antioxidant status: a study in a population of vegetarians and omnivores

• Posted: 13 March 2007
• Categroy: Health Research Archive

Antioxidant status can be used as a biomarker to assess chronic disease risk and diet can modulate antioxidant defence.

Abstract no: Eur J Clin Nutr. 2007 Feb 14; [Epub ahead of print]

Background: Antioxidant status can be used as a biomarker to assess chronic disease risk and diet can modulate antioxidant defence.Objective:To examine effects of vegetarian diet and variations in the habitual intakes of foods and nutrients on blood antioxidants.Subjects and Setting:Thirty-one vegetarians (including six vegans) and 58 omnivores, non-smokers, in Northern Ireland.Design:A diet history method was used to assess habitual diet. Antioxidant vitamins, carotenoids, uric acid, zinc- and ferric-reducing ability of plasma (FRAP) were measured in fasting plasma and activities of glutathione peroxidase (GPX), superoxide dismutase (SOD) and glutathione S-transferase (GST) and level of reduced glutathione (GSH) were measured in erythrocytes.Results:Vegetarians had approximately 15% higher levels of plasma carotenoids compared with omnivores, including lutein (P

13th March, 2007

 

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