Department of Environmental and Occupational Health, School of Public Health, Guangxi Medical University, Guangxi, China.
Guangxi Key Laboratory of Tumor Immunology and Microenvironmental Regulation, Guilin Medical University, Guilin, China.
Asia Pac J Clin Nutr. 2021 Sep;30(3):487-496. doi: 10.6133/apjcn.202109_30(3).0015.
The associations between oil tea and type 2 diabetes (T2D) have been little studied in the population. This study aimed to evaluate whether oil tea intake is related to the reduced risk of T2D in adults.
A rural-based cross-sectional study was conducted in Gongcheng Yao Autonomous County, Guangxi, southern China (2018-2019), with a total of 3178 population included in the final analysis. A multivariable logistic regression model was used to analyze the associations between the intake frequency, daily intake of oil tea and the risk of T2D. We further compared the association differences between the daily intake of oil tea and the risk of diabetes under different dietary patterns, which were generated from food frequency intake data using principal factor analysis.
The differences in the frequency and daily intake of oil tea in both groups (diabetes group and the non-diabetes group) were statistically significant (p<0.05). After adjusting for age, sex, smoking status, physical activity, body mass index (BMI), compared with non-oil tea drinkers, intake ≥3 times /d had an inverse association with T2D (OR=0.417; 95% CI: 0.205-0.848, p<0.05); while daily intake of more than 600 mL/d but less than 900 mL/d was significantly associated with reduced T2D risk (OR=0.492; 95% CI: 0.284-0.852, p=0.011). In the Chinese traditional dietary and the plant-based dietary model, compared with the non-oil tea drinkers, the fourth intake group had a lower risk of diabetes, with an OR (95%CI) value of 0.500 (0.291-0.854) and 0.505 (0.298-0.855), respectively, but no statistical significance (All p>0.05).
Our study suggests that oil tea was associated with a reduced risk of T2D aged 30 years or older.
人群中对油茶与 2 型糖尿病（T2D）之间的关联研究较少。本研究旨在评估油茶的摄入量是否与成年人患 T2D 的风险降低有关。
本研究是一项基于农村的横断面研究，在中国广西壮族自治区恭城瑶族自治县进行（2018-2019 年），共有 3178 人纳入最终分析。采用多变量逻辑回归模型分析油摄入频率、每日油茶摄入量与 T2D 风险之间的关系。我们进一步比较了不同饮食模式下每日油茶摄入量与糖尿病风险之间的关联差异，这些差异是从食物频率摄入数据中使用主成分分析生成的。
两组（糖尿病组和非糖尿病组）在油茶的摄入频率和每日摄入量上的差异均有统计学意义（p<0.05）。在调整年龄、性别、吸烟状况、身体活动、体重指数（BMI）后，与不饮茶者相比，每日摄入≥3 次与 T2D 呈负相关（OR=0.417；95%CI：0.205-0.848，p<0.05）；而每日摄入 600 至 900 毫升之间与降低 T2D 风险显著相关（OR=0.492；95%CI：0.284-0.852，p=0.011）。在中式传统饮食和植物性饮食模式中，与不饮茶者相比，第四摄入组的糖尿病风险较低，OR（95%CI）值分别为 0.500（0.291-0.854）和 0.505（0.298-0.855），但无统计学意义（均 p>0.05）。
本研究表明，油茶与 30 岁及以上人群的 T2D 风险降低有关。
