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  1. Consumption of black tea and cancer risk : a prospective cohort study.

    Article - En anglais

    Background 

    Tea is one of the most frequently consumed beverages in the world.

    Antioxidant polyphenol compounds (such as catechins and flavonols) are abundantly present in both green and black teas and have been observed to have anticarcinogenic properties in cell and animal model studies.

    In black tea, however, most of the catechins have been oxidized to forms that may have reduced anticarcinogenic properties.

    Despite indications from experimental studies that tea may protect against cancer, epidemiologic evidence has been inconclusive.

    Purpose 

    The association between black tea consumption and the subsequent risk of stomach, colorectal, lung, and breast cancers was investigated in The Netherlands Cohort Study on Diet and Cancer among 58 279 men and 62573 women aged 55-69 years.

    Methods 

    Subjects in the cohort completed a self-administered questionnaire on dietary habits and other risk factors for cancer at base line in 1986.

    Follow-up for cancer was done by means of computerized record linkage with all nine regional cancer registries in The Netherlands and the national pathology database.

    During 4.3 years of follow-up, 200,650,764, and 650 cases of stomach, colorectal, lung, and breast cancers were diagnosed, respectively.

    The questionnaire data of case subjects and those of a random subcohort (n=3500) were used to calculate rate ratios (RRs) of cancer in categories of consumers of black tea compared with nonconsumers.

    Results 

    Tea was not used by 13...

    Mots-clés Pascal : Tumeur maligne, Bronchopulmonaire, Glande mammaire, Côlon, Rectum, Estomac, Epidémiologie, Facteur risque, Prévention, Thé, Régime alimentaire, Homme, Etude cohorte, Etude longitudinale, Appareil respiratoire pathologie, Poumon pathologie, Bronche pathologie, Glande mammaire pathologie, Appareil digestif pathologie, Intestin pathologie, Estomac pathologie, Thé noir

    Mots-clés Pascal anglais : Malignant tumor, Bronchopulmonary, Mammary gland, Colon, Rectum, Stomach, Epidemiology, Risk factor, Prevention, Tea, Diet, Human, Cohort study, Follow up study, Respiratory disease, Lung disease, Bronchus disease, Mammary gland diseases, Digestive diseases, Intestinal disease, Gastric disease

    Logo du centre Notice produite par :
    Inist-CNRS - Institut de l'Information Scientifique et Technique

    Cote : 96-0266967

    Code Inist : 002B04B. Création : 199608.