A Cross-sectional Study for the Relationship Between Tea Drinking and Blood Lipids in Middle and Aged Population / 中国循环杂志

ABSTRACT

Methods: A cross-sectional study was conducted based on the data cohort of China multicenter collaborative study of cardiovascular epidemiology in 2007-2008. A total of 7227 participants were enrolled including 3304 male and 3923 female at the mean age of (55.6±7.1) years. Tea drinking information was collected by questionnaire; participants were stratified by gender and grouped by regular tea drinking. Relationship between tea drinking and blood lipids, lipoprotein levels were assessed by covariance analysis. Results: There were 3012/7227 (41.7%) participants (male 58.9% and female 27.2%) regularly drunk tea. With adjusted age, urban and rural, education level, cigarette smoking, alcohol drinking, body mass index (BMI), daily red meat intake, physical work intensity, exercise intensity, histories of hypertension, diabetes and hypercholesterolemia, in male gender, compared with non-regular tea drinker, regular tea drinker had decreased blood level of low density lipoprotein cholesterol (LDL-C), the difference was -0.12 mmol/L, P=0.0001 and increased triglyceride (TG), the difference was 0.11 mmol/L, P=0.0001; in female gender, regular tea drinker showed increased high density lipoprotein cholesterol (HDL-C), the difference was 0.06 mmol/L, P<0.0001. Conclusion: In our research, regular tea drinking was negatively related to blood LDL-C level and positively related to TG in male gender, while it was positively related to HDL-C in female gender; the above correlations were independent from possible influencing factors. The impact of long term regular tea drinking on blood lipids and lipoprotein levels should be further prospectively investigated in community based middle and aged population.