Effects of green tea catechin consumption on plasma adiponectin levels: a randomized controlled trial.

INTERVENTION: High tea catechin concentration group (400mg/day ): Study participants drink green tea with high tea catechin concentration during nine weeks after quitted drinking of green tea during one week. Low tea catechin concentration group (100mg/day ): Study participants drink green tea with low tea catechin concentration during nine weeks after quitted drinking of green tea during one week. CONDITION: Men and women who wish to improve their lifestyle aged 20 to 79 years without history of cancer, myocardial infarction, cerebrovascular disease, and renal disease. PRIMARY OUTCOME: Plasma diponectin levels. SECONDARY OUTCOME: High‐sensitive C‐reactive protein,; total cholesterol, triglyceride, ; HDL cholesterol, LDL cholesterol, ; aspartate aminotransferase,; alanine aminotransferase,; gamma‐glutamyl transpeptidase,; blood glucose, blood pressure, waist, and body mass index. INCLUSION CRITERIA: Persons who participate the lifestyle improvement program and persons who do not participate. Men and women aged 20 to 79 years.