a case control study on the effects of youcha on type 2 diabetes mellitus in gongcheng county china

Abstract Objective of the study is to explore the protective factors and risk factors of Youcha on type 2 diabetes mellitus in Gongcheng County. A 1: 2 matched case-control study conducted. Type 2 diabetes patients over the age of 35 were selected as the case group. A homogeneous population was used as the control group that are local residents, same age as case group ± 3 years, same sex, and no related chronic disease. A questionnaire survey was conducted with socio-demographic, family history, and drinking youcha habit, followed by physical examination and biochemical blood tests. Using the logistic regression model, the single factor and multivariate analysis were performed. The risk factors found were the family history of type 2 diabetes (OR = 12.28, 95%CI: 2.76-54.64); hypertension (OR = 7.32, 95%CI: 2.73-19.66); cardiovascular and cerebrovascular diseases (OR = 5.83. 95%CI: 2.61-13.00); and drinking youcha with fried food 54.9% vs. 35.2% (OR = 2.29, 95%CI: 1.35-3.87). The protective factors were daily drinking of 2 bowls of youcha 30.8% vs. 44.5% (OR = 0.40, 95%CI: 0.20-0.81); and daily-drinking 3 bowls 15.4% vs. 20.9% (OR = 0.39, 95%CI: 0.17-0.93) were all statistically significant. The analysis showed that drinking of 2-3 bowls of youcha is a protective factor for type 2 diabetes but drinking youcha with fried foods is a risk factor. Youcha when consumed in correct quantity can help reduce the incidence of type 2 diabetes. Keywords: Camellia oleifera; Gongcheng County; Hypertension; Obesity; Peanut oil; Type 2 diabetes; Youcha Abbreviations: IDF: International Diabetes Federation; Hba1c: Glycated Hemoglobin; WHO: World Health Organization; BMI: Body Mass Index; CDC: Center for Disease Control and Prevention; MET: Metabolic Equivalent; PAL: Physical Activity Level; EGCG: Epigallocatechin Gallate; EGC: Epigallocatechin Gallate