نتایج جستجو برای: tea consumption

تعداد نتایج: 235948  

Journal: :Cancer epidemiology, biomarkers & prevention : a publication of the American Association for Cancer Research, cosponsored by the American Society of Preventive Oncology 1995
M J Lee Z Y Wang H Li L Chen Y Sun S Gobbo D A Balentine C S Yang

Tea has been shown to inhibit chemically induced tumorigenesis in many animal models, but the effects of tea consumption on human carcinogenesis are not conclusive. In order to develop biomarkers for tea consumption, we developed methods for the analysis of tea polyphenols in human plasma and urine samples using HPLC with the coulochem electrode array detection system. (-)-Epigallocatechin-3-ga...

2013
Nana Li Yue Zhao Yuerong Liang

Tea is rich in polyphenolic catechins which are beneficial to health. There have been evidences suggesting that habitual tea consumption may reduce the risk of cardiovascular disease (CVD). Intake of tea or catechins isolated from tea was shown to inhibit the development of CVD in population studies and in animal models. Many possible pathways and mechanisms were investigated. There have been e...

Journal: :Heart 2004
N Nagaya H Yamamoto M Uematsu T Itoh K Nakagawa T Miyazawa K Kangawa K Miyatake

G reen tea is popular in Asia, including Japan, although it is rarely consumed by western people. It contains large amounts of catechins which are potent free radical scavengers and therefore has an antioxidant effect. Oxidative stress participates in the pathogenesis of many cardiovascular diseases. Recently, black tea consumption has been shown to reverse endothelial dysfunction in patients w...

Journal: :Cancer epidemiology, biomarkers & prevention : a publication of the American Association for Cancer Research, cosponsored by the American Society of Preventive Oncology 2010
Crystal N Holick Scott G Smith Edward Giovannucci Dominique S Michaud

Current data suggest that caffeinated beverages may be associated with lower risk of glioma. Caffeine has different effects on the brain, some of which could play a role in brain carcinogenesis, and coffee has been consistently associated with reduced risk of liver cancer, thus suggesting a potential anticarcinogenic effect. A total of 335 incident cases of gliomas (men, 133; women, 202) were a...

Journal: :The British journal of nutrition 2008
Nicoline Jochmann Mario Lorenz Amélie von Krosigk Peter Martus Volker Böhm Gert Baumann Karl Stangl Verena Stangl

Consumption of tea has been shown to improve endothelial function. It is assumed that catechins are the tea components responsible for these beneficial effects. In black tea, catechin concentrations are significantly lower than in green tea. The present study was designed to compare green and black tea with regard to amelioration of endothelial function. Endothelial function in response to both...

Journal: :The American journal of clinical nutrition 2005
Theo P Mulder Anton G Rietveld Johan M van Amelsvoort

BACKGROUND A major portion of the catechins in green tea is not absorbed in the small intestine. Bacteria in the colon convert nonabsorbed catechins into simpler phenolic compounds, which may also be absorbed. During the production of black tea, most catechins are polymerized to complex molecules called thearubigins. Little is known about the microbial degradation of these complex polyphenols, ...

Journal: :Asia Pacific journal of clinical nutrition 2007
Le Jian Andy H Lee Colin W Binns

Prostate cancer is the most common male cancer in developed countries and is increasing in the developing world. Its long latency and geographical variation suggest the possibility of prevention or postponement of onset by dietary modification. To investigate the possible joint effect of lycopene and green tea on prostate cancer risk, a case-control study was conducted in Hangzhou, China, with ...

Journal: :The American journal of clinical nutrition 2010
Dominique S Michaud Valentina Gallo Brigitte Schlehofer Anne Tjønneland Anja Olsen Kim Overvad Christina C Dahm Birgit Teucher Annekatrin Lukanova Heiner Boeing Madlen Schütze Antonia Trichopoulou Pagona Lagiou Andreas Kyrozis Carlotta Sacerdote Vittorio Krogh Giovanna Masala Rosario Tumino Amalia Mattiello H Bas Bueno-de-Mesquita Martine M Ros Petra H M Peeters Carla H van Gils Guri Skeie Dagrun Engeset Christine L Parr Eva Ardanaz Maria-Dolores Chirlaque Miren Dorronsoro Maria José Sánchez Marcial Argüelles Paula Jakszyn Lena M Nilsson Beatrice S Melin Jonas Manjer Elisabet Wirfält Kay-Tee Khaw Nick Wareham Naomi E Allen Timothy J Key Isabelle Romieu Paolo Vineis Elio Riboli

BACKGROUND In a recent US cohort study, total coffee and tea consumption was inversely associated with risk of glioma, and experimental studies showed that caffeine can slow the invasive growth of glioblastoma. OBJECTIVE The objective was to examine the relation between coffee and tea intake and the risk of glioma and meningioma in a large European cohort study, the European Prospective Inves...

Journal: :The British journal of nutrition 2007
Jonathan M Hodgson Ian B Puddey Frank M van Bockxmeer Valerie Burke

Plasma total homocysteine concentrations (tHcy) are a putative risk factor for CVD. Tea is a rich dietary source of polyphenols and caffeine, both of which may raise tHcy. However, it is possible that much of any effect is transitory and may be influenced by the consumption of food. Our objective was to investigate the acute effect of tea, at a dose representative of ordinary population intakes...

Journal: :Annals of epidemiology 2010
Qi Dai Xiao-Ou Shu Honglan Li Gong Yang Martha J Shrubsole Hui Cai Butian Ji Wanqing Wen Adrian Franke Yu-Tang Gao Wei Zheng

BACKGROUND Studies have found that tea polyphenols inhibit aromatase. Because of the substantial difference in levels of estrogens between premenopausal and postmenopausal women, the relationship between tea consumption and breast cancer risk may depend on menopausal status. METHODS We examined this hypothesis in the Shanghai Women's Health Study, a population-based cohort study of 74,942 Chi...

نمودار تعداد نتایج جستجو در هر سال

با کلیک روی نمودار نتایج را به سال انتشار فیلتر کنید