The study examining the effects of continuous drink of olive tea on obesity and glucose metabolism : a randomized, parallel group, controlled trial

INTERVENTION: Olive tea(12 weeks) low‐concentrated olive tea(12 weeks) CONDITION: Healthy subjects PRIMARY OUTCOME: Change in body weight and abdominal circumference from baseline to 12 weeks. SECONDARY OUTCOME: Change in following items from baseline to 12 weeks ; 1) Glucose metabolic indicator ; 2) Dietary habit; 3) Lipid metabolic indicator ; 4) Hepatic and renal function indicator INCLUSION CRITERIA: 1) Aged 40‐64 years. 2) BMI not less than 25.0 kg/m2, under 30.0 kg/m2 3) FPG not less than 100 mg/dL, under 126 mg/dL and/or HbA1c not less than 5.7%, under 6.5% 4) Capable of giving informed consent