This study was conducted to investigate the effects of green tea extracts on reducing blood glucose level
Males and females aged between 19 to 64 years
BMI between 18.5 and 29.9kg/m²
fasting blood glucose between 100 and 139 mg/dL (Note: if some subjects with blood glucose range of 126 - 139 mg/dL, those who are taking or requre medication must be excluded to meet ethical standards.)
subjects who voluntarily decide to participate in this study and sign the informed consent form.
Individuals taking to obesity, dyslipidemia, or uncontrolled hypertension at the screening
Individuals diagnosed with diabetes and who have taken medications related to blood glucose
Individuals congenital enzyme deficiencies related to sugar metabolism.
with hypersensitivity to the test food or ingredients(e.g., green tea, caffeine).
Parallel
GTE
Dietary supplementoral administration of GTE tablets once daily for 12 weeks
Placebo
Dietary supplementoral administration of placebo tablets once daily for 12 weeks
Change in fasting glucose level
blood glucose level detection
changes of indicator of lipid metabolism
Total cholesterol, HDL, LDL, TG
OGTT
oral glucose tolerance test
blood biomarkers
insulin etc.
change in waist circumference(cm)
-waist circumference was measured using WHO guideline
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