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. 2021 Dec 19;21(1):728.
doi: 10.1186/s12877-021-02707-8.

Habitual tea consumption and 5-year incident metabolic syndrome among older adults: a community-based cohort study

Xing-Xuan Dong #  1 , Rui-Rui Wang #  1 , Jie-Yu Liu  1 , Qing-Hua Ma  2 , Chen-Wei Pan  3
Affiliations

Habitual tea consumption and 5-year incident metabolic syndrome among older adults: a community-based cohort study

Xing-Xuan Dong et al. BMC Geriatr. .

Abstract

Background: The effect of tea consumption on metabolic syndrome (MetS) remains controversial. The objective of this study is to examine the prospective association of tea consumption with 5-year incident MetS among aged population in China.

Methods: This analysis included 3005 Chinese adults aged 60 years or older who were free of MetS at baseline examination. MetS was defined according to the National Cholesterol Education Program-Adult Treatment Panel III. Information regarding tea consumption was collected via an interviewer-administrated questionnaire. The prospective associations between tea consumption at baseline and 5-year incident MetS, as well as its individual components, were assessed by multiple logistic regression models.

Results: Of the 3005 participants free of MetS at baseline, 406 participants (cumulative incidence: 13.5%) developed MetS at the 5-year follow-up examination. In multiple logistic regressions, 5-year cumulative incidence of MetS was found to be higher in those who drank tea more than 5 times per week as compared with non-habitual drinkers (OR = 1.38, 95% CI: 1.05-1.82; P = 0.02). This relationship still existed in men (OR = 1.43, 95%CI: 1.00-2.01; P = 0.05) when stratified by gender. Among the five major components of MetS, low high-density lipoprotein cholesterol was observed in men, while high body mass index, elevated blood pressure and the presence of diabetes mellitus were significant in women.

Conclusions: High-frequent tea consumption increased the risk of MetS among older Chinese adults. These findings may add novel knowledge to the current studies regarding the controversial effect of tea consumption on cardiovascular and metabolic health among the aged population.

Keywords: Cohort study; Metabolic syndrome; Older adults; Tea consumption.

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Conflict of interest statement

The authors declare that they have no competing interests.

Figures

Fig. 1
Fig. 1
Sensitivity analysis of different characteristics and tea consumption habits of the study participants
Fig. 2
Fig. 2
Risk of developing metabolic syndrome and its components according to tea consumption habits. BP, blood pressure; BMI, body mass index; HDL-C, high-density lipoprotein cholesterol; TG, triglycerides; OR, odds ratio; CI, confidence interval. *Tea consumption habits were collected at baseline. Model 1, adjusted for age, gender. Model 2, adjusted for age, gender, initial BMI, educational level, monthly income and marriage status
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