Evidence map›Paper›PMID 36915113›Full record

ArticleBMC public health2023

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

Ying Zhao, Chengmeng Tang, Wenge Tang, Xuehui Zhang, Xiaoman Jiang, Zhuoma Duoji, Yixi Kangzhu, Xing Zhao, Xiaohe Xu, Feng Hong and 1 more

Open access · goldFull text read
In one paragraph

Article in BMC public health, 2023. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 10 papers, 1 of them a synthesis that pooled it.

0numbers the graph read from it
0cells of the map it votes in
10citing papers in PubMed, 1 pooled it
4.3field-weighted citation impact, top 6% of its field
1 · What the graph read from it

What it found

Each row is one number read from the abstract, on the scale the paper reported it, with its interval. Left of the dashed line favours the treatment, right favours the comparator. Under each row is the sentence it came from. New to these charts? A ten-minute tutorial.

The abstract states no effect estimate the extractor could read, or names no intervention and outcome on the map, so this paper lights no cell and moves no belief. It is still indexed, cited and linked below.

2 · The registry

The trial behind it

Trials whose registry record cites this paper, or whose number appears in the abstract. A trial that started after this paper was published is citing it as background, not reporting it.

Neither the registry nor the abstract names a trial number. If this is a trial report, that itself is worth knowing.

3 · Its place in the literature

Who cites it

10 citing papers in PubMed, 1 synthesis or guideline pooled it, 17 citations in OpenAlex.

  1. Pooled it
  2. Coumarins in hypertension management: from vascular signaling pathways to clinical perspectives.Hypertension research : official journal of the Japanese Society of Hypertension · 2026
    Review
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4 · The record

Corrections and comments

PubMed lists nothing against this paper. Absence here is not a guarantee, only a check that was made.

5 · Who and what money

Authors and funding

11 authors at 7 institutions in 2 countries.

Ying Zhao *West China School of Public Health and West China Fourth Hospital, Sichuan University, 610041, Chengdu City, Sichuan, China.
Chengmeng Tang *West China School of Public Health and West China Fourth Hospital, Sichuan University, 610041, Chengdu City, Sichuan, China.
Wenge Tang *Chongqing Municipal Center for Disease Control and Prevention, 400042, Chongqing, China.
Xuehui ZhangSchool of Public Health, Kunming Medical University, 650500, Kunming, China.
Xiaoman JiangChengdu Center for Disease Control and Prevention, 610041, Chengdu, China.
Zhuoma DuojiSchool of Medicine, Tibet University, 850000, Lhasa, China.
Yixi KangzhuTibet Center for disease control and prevention, 850000, Lhasa, China.
Xing ZhaoWest China School of Public Health and West China Fourth Hospital, Sichuan University, 610041, Chengdu City, Sichuan, China.
Xiaohe XuDepartment of Sociology , University of Texas at San Antonio, San Antonio, USA.
Feng HongSchool of Public Health, the Key Laboratory of Environmental Pollution Monitoring and Disease Control, Ministry of Education, Guizhou Medical University, Guiyang, China. fhong@gmc.edu.cn.
Qiaolan LiuWest China School of Public Health and West China Fourth Hospital, Sichuan University, 610041, Chengdu City, Sichuan, China. liuqiaol@scu.edu.cn.
Sichuan University · CNChengdu Center for Disease Control and Prevention · CNChengdu University of Information Technology · CNGuiyang Medical University · CNKunming Medical University · CNTibet Autonomous Region People's Hospital · CNTibet University · CN

Funding

National Key R&D Program of China 2017YFC0907300National Natural Science Foundation of China 82273745
6 · The paper itself

Abstract

objectivesPrior 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.

methodsWe 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.

resultsTea 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).

conclusionTea consumption was associated with lower SBP and a reduced risk of hypertensive BP. The antihypertensive effect varies across types of tea consumed.

Indexed as

HypertensionHypotensionAdultAntihypertensive AgentsBlood PressureChinaHumansTeaAntihypertensive AgentsTeaDiastolic blood pressureHypertensive blood pressureSystolic blood pressureTea consumption

Identifiers

PMID36915113
PMCPMC10010002
OpenAlexW4324129175

What OpenQuestion holds

Textfull text, public
LicenceCC BY
measurements read47
Read underepoch 390

Registered trials

None linked

Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.