scholarly journals The Association between Habitual Green Tea Consumption and Comprehensive Frailty as Assessed by Kihon Checklist Indexes among an Older Japanese Population

Nutrients ◽  
2021 ◽  
Vol 13 (11) ◽  
pp. 4149
Author(s):  
Hinako Nanri ◽  
Tsukasa Yoshida ◽  
Yuya Watanabe ◽  
Hiroyuki Fujita ◽  
Misaka Kimura ◽  
...  
Keyword(s):  
Green Tea ◽  
Japanese Population ◽  
Age Groups ◽  
Cross Sectional Study ◽  
Tea Consumption ◽  
Lower Prevalence ◽  
Cross Sectional ◽  
Elderly Japanese ◽  
Stratified Analysis ◽  
Cognitive Problems

Background: It is unclear whether habitual green tea consumption is related to comprehensive frailty. Objectives: We conducted this study to investigate this relationship among an elderly Japanese population. Methods: This was a cross-sectional study of baseline data from 2012. The study included 5668 Japanese participants (2766 men and 2902 women aged 65 years or older). The subjects completed a validated self-administered food frequency questionnaire that included questions on their green tea consumption. We evaluated comprehensive frailty using a 25-item Kihon Checklist (KCL), which comprised seven domains (instrumental activities of daily living (IADL), physical function, malnutrition, oral or eating function, socialization and housebound, cognitive function, and depression). Frailty was defined as a KCL score greater than or equal to seven. Results: We found that a higher consumption of green tea was associated with a lower prevalence of comprehensive frailty in both sexes. Further age-stratified analysis showed that a higher consumption of green tea among women was associated with a lower prevalence of comprehensive frailty, regardless of age. In men, however, this association was found only in the older age groups. An analysis of the association between green tea consumption and the frailty subdomains showed that green tea consumption was associated with a lower prevalence of oral dysfunction and cognitive problems in both sexes. In addition, only in women was higher green tea consumption found to be associated with a lower prevalence of IADL and mobility-related disability problems. Conclusions: Green tea consumption is inversely associated with the prevalence of comprehensive frailty in Japanese men and women. Longitudinal studies are required to confirm this association.

scholarly journals Association Between Habitual Green Tea Consumption and Comprehensive Frailty Risk Assessed by Kihon Checklist Indexes Among Japanese Elderly Population

2021 ◽  
Author(s):  
Hinako Nanri ◽  
Tsukasa Yoshida ◽  
Yuya Watanabe ◽  
Hiroyuki Fujita ◽  
Misaka Kimura ◽  
...  
Keyword(s):  
Green Tea ◽  
Lower Risk ◽  
Elderly Population ◽  
Age Groups ◽  
Cross Sectional Study ◽  
Tea Consumption ◽  
Cross Sectional ◽  
Cognitive Problem ◽  
Japanese Elderly ◽  
Stratified Analysis

Abstract Background: It is unclear whether habitual green tea consumption is related to comprehensive frailty. Objective: We conducted this study to investigate this relationship among a Japanese elderly population.Methods: This was a cross-sectional study of baseline data from 2012. The study included 5668 Japanese participants (2766 men and 2902 women, aged 65 years or older). The subjects completed a validated self-administered food frequency questionnaire that included green tea consumption. We evaluated comprehensive frailty by using a 25-item Kihon Checklist (KCL), which comprised seven domains (instrumental activities of daily living [IADL], physical function, malnutrition, oral or eating function, socialization and housebound, cognitive function, and depression). Frailty was defined as a KCL score ≥7. Results: We found that higher consumption of green tea was associated with a lower risk of frailty in both sexes. Further age-stratified analysis showed that higher consumption of green tea among women was associated with a lower risk of frailty, regardless of age. In men, however, these associations were found only in the older age groups. An analysis of the association between green tea consumption and frailty subdomains showed that green tea consumption was associated with a lower risk of oral dysfunction and cognitive problem in both sexes. In addition, only in women, higher green tea consumption was inversely associated with a lower risk of IADL and mobility-related disability problems.Conclusions: Green tea consumption is inversely associated with the prevalence of comprehensive frailty in Japanese men and women. Longitudinal studies are required to confirm this association.

scholarly journals Green tea consumption and cognitive function: a cross-sectional study from the Tsurugaya Project

2006 ◽  
Vol 83 (2) ◽  
pp. 355-361 ◽  
Author(s):  
Shinichi Kuriyama ◽  
Atsushi Hozawa ◽  
Kaori Ohmori ◽  
Taichi Shimazu ◽  
Toshifumi Matsui ◽  
...  
Keyword(s):  
Cognitive Function ◽  
Green Tea ◽  
Cross Sectional Study ◽  
Tea Consumption ◽  
Sectional Study ◽  
Cross Sectional

scholarly journals Green Tea Consumption and Chronic Atrophic Gastritis: A Cross-Sectional Study in a Green Tea Production Village.

2000 ◽  
Vol 10 (5) ◽  
pp. 310-316 ◽  
Author(s):  
Kazunori Shibata ◽  
Masaki Moriyama ◽  
Tetsuhito Fukushima ◽  
Akihiko Kaetsu ◽  
Motonobu Miyazaki ◽  
...  
Keyword(s):  
Atrophic Gastritis ◽  
Green Tea ◽  
Chronic Atrophic Gastritis ◽  
Cross Sectional Study ◽  
Tea Consumption ◽  
Sectional Study ◽  
Cross Sectional ◽  
Tea Production

scholarly journals Current Status of Periodontal Disease in Adults in Takahagi, Japan:A Cross-sectional Study

2020 ◽  
Author(s):  
Satoshi Sekino ◽  
Ryoichi Takahashi ◽  
Yukihiro Numabe ◽  
Hiroshi Okamoto
Keyword(s):  
Periodontal Disease ◽  
Japanese Population ◽  
Adult Population ◽  
Age Groups ◽  
Cross Sectional Study ◽  
Current Status ◽  
Cross Sectional ◽  
Probing Depth ◽  
Tooth Surfaces ◽  
The Mean

Abstract Background : To date, a few studies have documented the detailed periodontal conditions of a Japanese population. It is important to know if the awareness of Japanese nationals and dentists regarding oral hygiene and prevention of periodontal disease have improved when compared with the past in Japan for the development of future scenarios regarding prevention. The aim of this study was to investigate the severity, prevalence, and extent of periodontal disease in the adult population of the city of Takahagi, Japan. Results were also compared with those of an epidemiological study performed in Japan in the 1980s. Methods : A total of 582 (aged 20 to 89 years) randomly sampled Takahagi residents answered a comprehensive questionnaire and participated in clinical examinations. Results : The mean percentages of tooth surfaces harboring plaque and exhibiting BOP were 59.5 ± 24.9% and 31.1 ± 21.1%, respectively. The mean PPD and CAL were 2.5 ± 0.5 mm and 2.9 ± 1.0 mm, respectively. Compared with results of the 1980s survey, the mean percentages of plaque and bleeding on probing were lower in the current population. The mean CAL and prevalence of attachment loss of ³5 mm in some age groups were higher in the present study than in the 1980s study. There were no statistically significant differences with respect to mean probing depth between the 1980s and current age groups. Conclusions : Periodontal disease was still prevalent in the current Japanese population, even though some improvement occurred. Proper public health programs therefore need to be established.

scholarly journals Green tea consumption in everyday life and mental health

2005 ◽  
Vol 8 (8) ◽  
pp. 1300-1306 ◽  
Author(s):  
Mari Shimbo ◽  
Keiko Nakamura ◽  
Hui Jing Shi ◽  
Masashi Kizuki ◽  
Kaoruko Seino ◽  
...  
Keyword(s):  
Mental Health ◽  
Everyday Life ◽  
Green Tea ◽  
General Health Questionnaire ◽  
Black Tea ◽  
Population Based ◽  
Cross Sectional Study ◽  
Caffeine Intake ◽  
Tea Consumption ◽  
Cross Sectional

AbstractObjectiveGreen tea has been widely acknowledged in Japan to induce a pleasurable mental feeling. Recent laboratory studies have suggested positive psychological effects as a result of consuming green tea. The present study examined whether green tea consumption in everyday life in Japan is associated with positive mental health.DesignA cross-sectional study was performed in February–March 2002.Setting and subjectsThe subjects of the study consisted of a general population of 600 Japanese aged 20–69 years. Responses of 380 subjects, obtained by home-visit interview, were analysed. The questionnaire inquired about consumption of brewed green tea and other beverages, perceived mental health status, lifestyle and others. The 12-item General Health Questionnaire (GHQ 12) was used for the assessment of mental ill-health (GHQ score ≥4).ResultsAfter adjustments for age, area, perceived mental stress, lifestyle and daily caffeine intake, the consumption of brewed green tea was not statistically associated with any decrease in risk of mental ill-health among either males or females (odds ratio (OR) = 0.78, 95% confidence interval (CI) = 0.47–1.29 for males; OR = 0.77, 95% CI = 0.51–1.14 for females). Daily caffeine intake (100 mg) inclusive of green tea, black tea, coffee and other caffeine-containing beverages was associated with a higher risk of mental ill-health among females (OR = 1.26, 95% CI = 1.01–1.56).ConclusionsThe results provide population-based evidence on the consumption of brewed green tea in everyday life and mental health, together with information on consumption patterns of various beverages and lifestyles.

scholarly journals Association of tea drinking and dysmenorrhoea among reproductive-age women in Shanghai, China (2013–2015): a cross-sectional study

BMJ Open ◽  
2019 ◽  
Vol 9 (4) ◽  
pp. e026643 ◽  
Author(s):  
Xiaoyu Zhang ◽  
Rongrong Zhang ◽  
Dan Chen ◽  
Rong Huang ◽  
Ying Tian ◽  
...  
Keyword(s):  
Green Tea ◽  
Cross Sectional Study ◽  
Reproductive Age ◽  
Lower Prevalence ◽  
Sectional Study ◽  
Women Of Reproductive Age ◽  
Cross Sectional ◽  
Oolong Tea ◽  
Preconceptional Care ◽  
Tea Drinking

ObjectivesTo investigate the association between tea drinking and dysmenorrhoea among women of reproductive age.DesignA cross-sectional study based on Shanghai Birth Cohort Study.SettingTwo preconceptional care clinics in Shanghai, China.Participants1183 women of reproductive age who sought preconceptional care were recruited from August 2013 to April 2015.Primary and secondary outcome measuresParticipants were asked if they had pelvic pain associated with menstrual bleeding during the past 12 months and to further grade the intensity of menstrual cramp as mild, moderate and severe. Multinomial logistic regression was performed to assess the association of tea drinking and dysmenorrhoea. Other information, such as demographic and lifestyle factors, was also collected and assessed in relation to dysmenorrhoea.ResultsThe prevalence of dysmenorrhoea was 57.8%, among whom 10.4% and 3.5% had moderate and severe dysmenorrhoea, respectively. Tea drinking was associated with a lower prevalence of dysmenorrhoea (adjusted OR [aOR]=0.68, 95% CI 0.50 to 0.93 for mild dysmenorrhoea; aOR=0.59 (95% CI 0.32 to 1.04) for moderate-to-severe dysmenorrhoea). Green tea and oolong tea appeared to have most reduction in the prevalence of dysmenorrhoea (for mild dysmenorrhoea: green tea: aOR=0.63 (95% CI 0.44 to 0.90) and oolong tea: aOR=0.60 (95% CI 0.35 to 1.03); for moderate-to-severe dysmenorrhoea: green tea: aOR=0.42 (95% CI 0.20 to 0.85) and oolong tea: aOR=0.34 (95% CI 0.11 to 1.09)).ConclusionsConsumptions of green tea and possibly oolong tea were associated with a lower prevalence of dysmenorrhoea.

scholarly journals COVID -19: could green tea catechins reduce the risks?

2020 ◽  
Author(s):  
Maksim Storozhuk
Keyword(s):  
Green Tea ◽  
Cross Sectional Study ◽  
Tea Consumption ◽  
Sectional Study ◽  
Epidemiological Evidence ◽  
Cross Sectional ◽  
Tea Catechins ◽  
Green Tea Catechins ◽  
Regression Approach ◽  
Per Capita

Objectives: Several lines of emerging pharmacological and epidemiological evidence imply that overall risks related to COVID-19 may be reduced by green tea catechins. Therefore, it may be expected that: (i) higher green tea consumption is associated with lower COVID-19 morbidity and/or mortality; (ii) countries with higher per/capita green tea consumption would be less affected by COVID-19. The aim of this study was to assess the second possibility. Study design: This was a cross-sectional study. Methods: Among countries with at least 3 million population (n=134), countries with relatively high (above 150 g) per/capita green tea consumption have been tentatively identified (n=21); (ii) normalized to population values of COVID-19 cases (morbidity) and deaths (mortality) for groups of countries with high and low per/capita green tea consumption were compared. Results: Striking differences in COVID-19 morbidity (and mortality) between groups of countries with higher and lower green tea consumption. The differences were still observed after the adjustment for the onset of the disease. Besides, preliminary analysis using multiple linear regression approach suggests that the associations are present at the level of individual countries. Conclusion: Evidence supporting the idea that green tea constituents could reduce overall risks related to COVID-19 has been obtained. The results are promising and are in line with emerging evidence from other studies including pharmacological ones. Nevertheless, because of limitations of this study the idea still should be considered as a hypothesis requiring further assessment.

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