Comparative Study of Green Tea Beverage and Green Tea Extract Supplementation on Clinical Variables and Oxidative Stress in Subjects with Metabolic Syndrome (MeS)

Abstract

Twenty-eight subjects with MeS were enrolled in this 8 week clinical trial. The study examined the effects of green tea (4 cups/day), green tea supplement (2 capsules, 500 mg EGCG, 4 cups water/day), and control (4 cups water/day) on clinical variables and biomarkers of oxidative stress. Findings and Conclusions: Freshly brewed green tea and green tea supplement is safe for use in middle-aged obese adults with MeS and green tea beverage was shown to lower biomarkers of oxidative stress. The change in body weight and BMI were significantly greater in the green tea group (p<0.05), when compared to the controls. A decreasing trend was shown with regards to MPO when analyzing the effects of the supplemented group. In addition, there was a significant decrease in ox-LDL in the green tea group at 8 weeks when compared to baseline (p<0.05).