Dataset Information

Association of tea consumption and the risk of gastric cancer in Japanese adults: the Japan Collaborative Cohort Study.

ABSTRACT: OBJECTIVE:To examine the possible relationship between tea consumption and risk of gastric cancer (GC) among Japanese men and women included in a large Japanese population-based study titled the Japan Collaborative Cohort (JACC) Study. DESIGN:Prospective cohort study. SETTING:A population-based cohort included subjects who were recruited from 24 areas of JACC Study, in which data regarding the incidence of cancer were available. PARTICIPANTS:63 848 participants (26 025 men and 37 823 women), aged 40-79, were included in the analyses and underwent follow-up (median 13.3 years) prospectively in research on cancer incidence. PRIMARY AND SECONDARY OUTCOME MEASURES:The primary outcome variable was the risk of GC according to the frequency intakes of total tea, green tea, black tea and oolong tea. The adjusted HRs for the risk of GC associated with tea consumption were calculated using the Cox proportional hazards model. RESULTS:1494 cases of GC were detected (960 men and 534 women) during the follow-up period. The multivariable-adjusted HRs for the risk of GC in the highest versus lowest quintiles of total tea intake were 1.05 (0.83-1.33); p trend=0.50 in men, and 0.82 (0.60-1.12); p trend=0.45 in women. There was no association found between the consumption of green tea, black tea or oolong tea with the risk for GC in either gender. CONCLUSIONS:In this large community-based prospective cohort study, tea consumption was not associated with the risk of GC in either gender.

SUBMITTER: Sheerah H

PROVIDER: S-EPMC7539605 | biostudies-literature | 2020 Oct

REPOSITORIES: biostudies-literature

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Association of tea consumption and the risk of gastric cancer in Japanese adults: the Japan Collaborative Cohort Study.

Sheerah Haytham H Keyang Liu L Eshak Ehab Salah ES Cui Renzhe R Shirai Kokoro K Muraki Isao I Iso Hiroyasu H Tamakoshi Akiko A

BMJ open 20201006 10

<h4>Objective</h4>To examine the possible relationship between tea consumption and risk of gastric cancer (GC) among Japanese men and women included in a large Japanese population-based study titled the Japan Collaborative Cohort (JACC) Study.<h4>Design</h4>Prospective cohort study.<h4>Setting</h4>A population-based cohort included subjects who were recruited from 24 areas of JACC Study, in which data regarding the incidence of cancer were available.<h4>Participants</h4>63 848 participants (26 0 ...[more]

PMID: 33028558

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Project description:BackgroundCurrent evidence on tea consumption and hypertension is inconclusive, and prospective studies among habitual tea drinkers remain limited.ObjectiveWe investigated the associations of habitual tea consumption with hypertension risk and longitudinal blood pressure changes in 2 large cohorts.MethodsThis study included participants aged 40-75 y from the Shanghai Women's Health Study (n = 31,351) and the Shanghai Men's Health Study (n = 28,342), without hypertension, diabetes, cardiovascular disease, or cancer at baseline. Information on tea consumption was assessed during in-person interviews at enrollment and follow-up visits. Incident hypertension was identified by self-reported diagnosis, medication use, or blood pressure measurements.ResultsCurrent tea drinkers had a 7% higher risk than the non-current tea drinker group [HRs (95% CIs): women, 1.07 (1.01, 1.14); men, 1.07 (1.02, 1.12)]. The amount of tea drinking showed significant dose-response associations with hypertension: compared with the non-current group, HRs (95% CIs) for women and men were 1.01 (0.90, 1.14) and 1.02 (0.96, 1.08) for low (women/men: <100/200 g/mo), 1.07 (1.01, 1.15) and 1.05 (0.99, 1.12) for medium (women/men: 100-250/200-250 g/mo), and 1.18 (1.01, 1.39) and 1.10 (1.03, 1.17) for the high-amount group (women/men: >250 g/mo). Among participants without hypertension, compared with non-current tea drinkers, least-squares means of 3-y changes in blood pressure were 0.3-0.4 mm Hg higher for women and men as current drinkers and 0.7-0.9 mm Hg higher for men in the high-consumption group. Compared with those who never drank tea, women who drank tea consistently had 0.5 (0.2, 0.7) mm Hg higher diastolic blood pressure (DBP), whereas men had 0.5 (0.04, 0.9) mm Hg higher systolic blood pressure and 0.3 (0.04, 0.6) mm Hg higher DBP, respectively.ConclusionsOur findings suggest that habitual tea drinking is associated with a slightly higher risk of hypertension and a minor increase in blood pressure among middle-aged and older Chinese adults, which warrants confirmation by long-term intervention studies.

Dataset Information

Association of tea consumption and the risk of gastric cancer in Japanese adults: the Japan Collaborative Cohort Study.

Publications

Association of tea consumption and the risk of gastric cancer in Japanese adults: the Japan Collaborative Cohort Study.

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