BACKGROUND: The anticarcinogenic potential of green tea and coffee might be expected to reduce the risk of thyroid cancer, but epidemiological evidence is sparse. We examined green tea and coffee consumption in association with thyroid cancer risk in a general Japanese population. METHODS: We analyzed data from a prospective cohort of 100,507 persons (48,802 men; 51,705 women) aged 40-69. Green tea and coffee consumption were assessed via a self-administered questionnaire. During a mean 14.2-year follow-up, we documented 159 thyroid cancer cases (26 in men; 133 in women), and Cox regression were used to calculated hazard ratios (HRs). RESULTS: Green tea consumption was not found to be associated with thyroid cancer risk in general. However, when women were stratified by menopausal status, the multivariable HR for ≥ 5 cups/day versus <1 cup/day was 1.66 (95% confidence interval (CI) = 0.85-3.23, trend p = 0.04) in premenopausal women, and was 0.47 (95% CI = 0.23-0.96, trend p = 0.06) in postmenopausal women. We found no association between coffee consumption and thyroid cancer risk in either sex. CONCLUSIONS: High green tea consumption may be positively associated with premenopausal thyroid cancer risk, but inversely associated with postmenopausal thyroid cancer risk.
BACKGROUND: The anticarcinogenic potential of green tea and coffee might be expected to reduce the risk of thyroid cancer, but epidemiological evidence is sparse. We examined green tea and coffee consumption in association with thyroid cancer risk in a general Japanese population. METHODS: We analyzed data from a prospective cohort of 100,507 persons (48,802 men; 51,705 women) aged 40-69. Green tea and coffee consumption were assessed via a self-administered questionnaire. During a mean 14.2-year follow-up, we documented 159 thyroid cancer cases (26 in men; 133 in women), and Cox regression were used to calculated hazard ratios (HRs). RESULTS: Green tea consumption was not found to be associated with thyroid cancer risk in general. However, when women were stratified by menopausal status, the multivariable HR for ≥ 5 cups/day versus <1 cup/day was 1.66 (95% confidence interval (CI) = 0.85-3.23, trend p = 0.04) in premenopausal women, and was 0.47 (95% CI = 0.23-0.96, trend p = 0.06) in postmenopausal women. We found no association between coffee consumption and thyroid cancer risk in either sex. CONCLUSIONS: High green tea consumption may be positively associated with premenopausal thyroid cancer risk, but inversely associated with postmenopausal thyroid cancer risk.
Authors: Raul Zamora-Ros; Muath A Alghamdi; Valerie Cayssials; Silvia Franceschi; Martin Almquist; Joakim Hennings; Maria Sandström; Konstantinos K Tsilidis; Elisabete Weiderpass; Marie-Christine Boutron-Ruault; Bodil Hammer Bech; Kim Overvad; Anne Tjønneland; Kristina E N Petersen; Francesca Romana Mancini; Yahya Mahamat-Saleh; Fabrice Bonnet; Tilman Kühn; Renée T Fortner; Heiner Boeing; Antonia Trichopoulou; Christina Bamia; Georgia Martimianaki; Giovanna Masala; Sara Grioni; Salvatore Panico; Rosario Tumino; Francesca Fasanelli; Guri Skeie; Tonje Braaten; Cristina Lasheras; Elena Salamanca-Fernández; Pilar Amiano; Maria-Dolores Chirlaque; Aurelio Barricarte; Jonas Manjer; Peter Wallström; H Bas Bueno-de-Mesquita; Petra H Peeters; Kay-Thee Khaw; Nicholas J Wareham; Julie A Schmidt; Dagfinn Aune; Graham Byrnes; Augustin Scalbert; Antonio Agudo; Sabina Rinaldi Journal: Eur J Nutr Date: 2018-12-10 Impact factor: 5.614
Authors: Song-Yi Park; Neal D Freedman; Christopher A Haiman; Loïc Le Marchand; Lynne R Wilkens; Veronica Wendy Setiawan Journal: Cancer Epidemiol Biomarkers Prev Date: 2018-05-18 Impact factor: 4.254
Authors: Grégoire B Morand; Sabrina Daniela da Silva; Michael P Hier; Moulay A Alaoui-Jamali Journal: Front Oncol Date: 2014-11-04 Impact factor: 6.244