Four cups of green tea beverage per day and green tea extract (two capsules and four cups water/day) in obese subjects with MetS (n = 35) did not alter inflammation biomarkers, such as IL-1β, IL-6, CRP, soluble vascular cell adhesion molecular-1 (sVCAM-1), soluble intracellular adhesion molecular-1 (sICAM-1), leptin, and the leptin: adiponectin ratio. This evidence concerns the gene IL1B and metabolic syndrome.