The Department of Family Medicine, National Cheng Kung University Hospital, No.138, Sheng Li Road, Tainan, 70403, Taiwan.
The Department of Family Medicine, College of Medicine, National Cheng Kung University, Tainan, Taiwan.
World J Urol. 2019 Feb;37(2):379-384. doi: 10.1007/s00345-018-2394-4. Epub 2018 Jul 2.
Previous studies have looked into the association between tea consumption and renal stone disease, but the impact of tea consumption over time has not yet been fully clarified. Our study aimed to examine the amount and duration of tea consumption concomitantly in relation to the risk of renal stone disease.
A total of 13,842 subjects who underwent health check-ups were recruited. Average tea consumption per day was defined as the amount of tea consumption per day multiplied by the frequency per week divided by seven. A "cup" was defined as 120 mL for each Chinese traditional teapot," and "cup-year" was calculated by multiplying the number of daily cups and the years of tea consumption to express the cumulative dose of tea consumption over time. The diagnosis of renal stone disease was established based on the results of abdominal sonography.
The amount of daily tea consumption was 119.2 ± 306.8 and 131.7 ± 347.3 mL in groups with and without renal stone disease. After adjusting for other clinical variables, daily tea consumption ≥ 240 mL vs. none was related to lower risk of renal stone disease (OR = 0.84, CI 0.71-0.99, p = 0.037). In another model, the associated risk of renal stone disease decreased significantly with tea consumption ≥ 20 cup-year (OR = 0.79, CI 0.66-0.94, p = 0.008), but not < 20 cup-year (OR = 0.92, CI 0.78-1.09, p = 0.34).
Daily tea consumption ≥ 240 mL (two cups) was associated with a lower risk of renal stone disease. Tea consumption ≥ 20 cup-year also had a decreased associated risk of renal stone disease.
先前的研究探讨了饮茶与肾结石病之间的关联，但饮茶量随时间的变化影响尚未完全阐明。我们的研究旨在同时检查饮茶量和时间与肾结石病风险之间的关系。
共纳入 13842 名接受健康检查的受试者。平均每天的饮茶量定义为每天的饮茶量乘以每周的频率，再除以 7。“一杯”被定义为每个中国传统茶壶中的 120 毫升，“杯年”是通过每天的杯数乘以饮茶年数来计算，表示随时间累积的饮茶量。肾结石病的诊断是基于腹部超声检查的结果。
肾结石病组和无肾结石病组的每日饮茶量分别为 119.2±306.8 和 131.7±347.3 毫升。在调整其他临床变量后，每日饮茶量≥240 毫升与肾结石病风险降低相关（OR=0.84，95%CI 0.71-0.99，p=0.037）。在另一个模型中，随着饮茶量≥20 杯年（OR=0.79，95%CI 0.66-0.94，p=0.008），肾结石病的发病风险显著降低，但饮茶量<20 杯年（OR=0.92，95%CI 0.78-1.09，p=0.34）没有明显降低。
每日饮茶量≥240 毫升（两杯）与肾结石病风险降低相关。饮茶量≥20 杯年也与肾结石病的发病风险降低相关。
