SEARCHCOHORTcardiology, epidemiology

cohort·cardiology, epidemiology, public health, nutrition, observational study·PMC10010002

The association between tea consumption and blood pressure in the adult population in Southwest China

BMC Public Health · 11 authors, 9 centres

AI SUMMARY

FIDELITY 100%

This summary was generated by AI from a single paper. It has not been reviewed by a clinician and is not clinical advice. Verify against the source before acting on it.

AGENT 01 · STRUCTURED SUMMARY

TRACE TO SOURCE

“

TL;DR

The specific blood pressure-lowering effects varied depending on the type of tea and consumption patterns.

Full summary

1,059 CHARS

This study analyzed baseline data from the China Multi-Ethnic Cohort, including 76,673 adults aged 30–79, to examine associations between tea consumption and blood pressure. Using logistic and linear regression models, the authors found that overall tea consumption was associated with a 10% reduced risk of hypertensive blood pressure (AOR: 0.90). Specific tea types showed varying associations: dark tea was linked to reductions in both SBP (1.79–5.31 mmHg) and DBP (0.47–1.02 mmHg); sweet tea consumption was associated with SBP reductions of 3.19–7.18 mmHg; and green tea was associated with SBP reductions of 1.21–2.98 mmHg. The effects for scented and black teas were also significant but varied by consumption duration, frequency, and amount. The study adjusted for various confounders and conducted stratified analyses. Limitations include potential recall bias from self-reported data, the absence of tea brewing method information, and the inability to measure caffeine content. As a cross-sectional study, it cannot establish a causal relationship.

STUDY TYPE

cohort

SPECIALTY

cardiology

SUMMARISED BY

AI pipeline

FIDELITY CHECK

100% · A

ORIGINAL PAPER

PMC10010002

The association between tea consumption and blood pressure in the adult population in Southwest China

BMC Public Health

READ THE FULL PAPER

ABSTRACT

Abstract Objectives Prior research on the effect of tea consumption on blood pressure (BP) generated inconsistent findings. The objective of this study was to explore the effects of different types of tea consumption on BP. Methods We included 76,673 participants aged 30–79 from the baseline data of the China Multi-Ethnic Cohort (CMEC) study. Binary logistic regression was used to analyze the influences of different types of tea consumption on the risk of hypertensive BP. Moreover, multiple linear regression was used to examine the association between tea drinking and BP. Results Tea consumption was associated with a reduced risk of hypertensive BP by 10% (AOR: 0.90, 95%CI: 0.86–0.94). While dark tea was related to a 1.79–5.31 mmHg reduction in systolic blood pressure (SBP) and a 0.47–1.02 mmHg reduction in diastolic blood pressure (DBP), sweet tea, regardless of the duration, frequency, or amount of consumption, significantly was associated with a reduced SBP by 3.19–7.18 mmHg. Green tea also was associated with a reduced SBP by 1.21–2.98 mmHg. Although scented tea was related to reduced SBP by 1.26-2.48 mmHg, the greatest effect came from the long duration (> 40 years:β=-2.17 mmHg, 95%CI=-3.47 mmHg --0.87 mmHg), low frequency (1–2 d/w: β = -2.48 mmHg, 95%CI=-3.76 mmHg–-1.20 mmHg), and low amount (≤ 2 g/d: β=-2.21 mmHg, 95%CI=-3.01 mmHg–-1.40 mmHg). Additionally, scented tea was correlated to a decrease in DBP at the frequency of 1–2 d/w (β=-0.84 mmHg, 95%CI=-1.65 mmHg–-0.02 mmHg). Drinking black tea only was associated with lowered SBP. The protective effect of black tea on SBP was characterized by the long-duration (> 15 years, -2.63–-5.76 mmHg), high frequency (6–7 d/w, -2.43 mmHg), and medium amount (2.1-4.0 g/d, -3.06 mmHg). Conclusion Tea consumption was associated with lower SBP and a reduced risk of hypertensive BP. The antihypertensive effect varies across types of tea consumed. Supplementary Information The online version contains supplementary material available at 10.1186/s12889-023-15315-5. Keywords: Hypertensive blood pressure, Systolic blood pressure, Diastolic blood pressure, Tea consumption

CITATION EXPORT

Ying Zhao, Chengmeng Tang, Wenge Tang et al.. The association between tea consumption and blood pressure in the adult population in Southwest China. BMC Public Health. (2023). https://doi.org/10.1186/s12889-023-15315-5

AUTHORS

11 · 9 CENTRES

Ying Zhao, Chengmeng Tang, Wenge Tang, Xuehui Zhang, Xiaoman Jiang, Zhuoma Duoji, Yixi Kangzhu, Xing Zhao, Xiaohe Xu, Feng Hong, Qiaolan Liu

1West China School of Public Health and West China Fourth Hospital, Sichuan University, 610041 Chengdu City, Sichuan China
2Chongqing Municipal Center for Disease Control and Prevention, 400042 Chongqing, China
3School of Public Health, Kunming Medical University, 650500 Kunming, China
4Chengdu Center for Disease Control and Prevention, 610041 Chengdu, China
5School of Medicine, Tibet University, 850000 Lhasa, China
6Tibet Center for disease control and prevention, 850000 Lhasa, China
7Department of Sociology , University of Texas at San Antonio, San Antonio, USA
8Department of Sociology and Psychology, School of Public Administration, Sichuan University, 610064 Chengdu, China
9School of Public Health, the Key Laboratory of Environmental Pollution Monitoring and Disease Control, Ministry of Education, Guizhou Medical University, Guiyang, China