1. Association of unsweetened and sweetened tea consumption with the risk of new-onset chronic kidney disease: Findings from UK Biobank and Coronary Artery Risk Development in Young Adults (CARDIA) study.
- Author
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Mengyi Liu, Yanjun Zhang, Ziliang Ye, Sisi Yang, Yuanyuan Zhang, Panpan He, Chun Zhou, Fan Fan Hou, and Xianhui Qin
- Subjects
CHRONIC kidney failure ,LIFESTYLES ,TRIGLYCERIDES ,HDL cholesterol ,BEVERAGES ,SCIENTIFIC observation ,HUMAN research subjects ,CONFIDENCE intervals ,FOOD consumption ,NUTRITIONAL requirements ,REGRESSION analysis ,RISK assessment ,FOOD additives ,INFORMED consent (Medical law) ,SEX distribution ,CAFFEINE ,QUESTIONNAIRES ,SPHYGMOMANOMETERS ,DESCRIPTIVE statistics ,RESEARCH funding ,TEA ,SOCIODEMOGRAPHIC factors ,BLOOD pressure measurement ,DATA analysis software ,LONGITUDINAL method ,MEASUREMENT errors ,CREATININE ,CHOLESTEROL ,PROPORTIONAL hazards models ,DISEASE risk factors - Abstract
Background The association between tea consumption and chronic kidney disease (CKD) remained inconsistent. We aimed to evaluate the association of tea consumption with new-onset CKD and examine the effects of common additives (milk and sweeteners) and genetic variations in caffeine metabolism on the association. Methods 176038 and 3104 participants free of CKD at baseline in the United Kingdom Biobank (UK Biobank) and Coronary Artery Risk Development in Young Adults (CARDIA) study were included, respectively. Dietary information was collected using 24-hour dietary recall questionnaires. The study outcome was new-onset CKD. Results In the UK Biobank, during a median follow-up of 12.13 years, 3535 (2.01%) participants developed CKD. Compared with tea non-consumers, the risk of new-onset CKD was significantly lower in unsweetened tea consumers (hazard ratio (HR)=0.84, 95% confidence interval (CI)=0.76-0.93), but not in sweetened tea consumers (HR=0.96, 95% CI=0.85-1.08), regardless of whether milk was added to tea. Accordingly, relative to tea non-consumers, the adjusted HRs (95% CIs) of new-onset CKD for participants who reported drinking unsweetened tea 1.5 or fewer, >1.5 to 2.5, >2.5 to 3.5, >3.5 to 4.5, and >4.5 drinks/d were HR= 0.86, 95% CI = 0.75-0.99; HR=0.88, 95% CI=0.78-1.00; HR=0.83, 95% CI=0.73-0.94; HR=0.83, 95% CI=0.72-0.95; and HR=0.86, 95% CI=0.75-0.99. Moreover, the association of unsweetened tea consumption with new-onset CKD was stronger among those with faster genetically predicted caffeine metabolism levels, although the interaction was insignificant (P-value interaction=0.768). Consistently, in the CARDIA study, compared with tea non-consumers, a significantly lower risk of new-onset CKD was found in unsweetened tea consumers (HR=0.80, 95% CI=0.65-0.98) but not in sweetened tea consumers (HR=0.97, 95% CI=0.70-1.34). Conclusions Compared with tea non-consumers, consumption of unsweetened tea, but not sweetened tea, was significantly associated with a lower risk of new-onset CKD, regardless of whether milk was added. [ABSTRACT FROM AUTHOR]
- Published
- 2023
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