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Green tea and coffee consumption and its association with thyroid cancer risk: a population-based cohort study in Japan.
Cancer Causes Control. 2011 Jul; 22(7):985-93.CC

Abstract

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+Show Affiliations

Epidemiology and Prevention Division, Research Center for Cancer Prevention and Screening, National Cancer Center, 5-1-1 Tsukiji, Chuo-ku, Tokyo, 104-0045, Japan.No affiliation info availableNo affiliation info availableNo affiliation info availableNo affiliation info availableNo affiliation info availableNo affiliation info availableNo affiliation info available

Pub Type(s)

Journal Article
Research Support, Non-U.S. Gov't

Language

eng

PubMed ID

21562752

Citation

Michikawa, Takehiro, et al. "Green Tea and Coffee Consumption and Its Association With Thyroid Cancer Risk: a Population-based Cohort Study in Japan." Cancer Causes & Control : CCC, vol. 22, no. 7, 2011, pp. 985-93.
Michikawa T, Inoue M, Shimazu T, et al. Green tea and coffee consumption and its association with thyroid cancer risk: a population-based cohort study in Japan. Cancer Causes Control. 2011;22(7):985-93.
Michikawa, T., Inoue, M., Shimazu, T., Sasazuki, S., Iwasaki, M., Sawada, N., Yamaji, T., & Tsugane, S. (2011). Green tea and coffee consumption and its association with thyroid cancer risk: a population-based cohort study in Japan. Cancer Causes & Control : CCC, 22(7), 985-93. https://doi.org/10.1007/s10552-011-9771-2
Michikawa T, et al. Green Tea and Coffee Consumption and Its Association With Thyroid Cancer Risk: a Population-based Cohort Study in Japan. Cancer Causes Control. 2011;22(7):985-93. PubMed PMID: 21562752.
* Article titles in AMA citation format should be in sentence-case
TY - JOUR T1 - Green tea and coffee consumption and its association with thyroid cancer risk: a population-based cohort study in Japan. AU - Michikawa,Takehiro, AU - Inoue,Manami, AU - Shimazu,Taichi, AU - Sasazuki,Shizuka, AU - Iwasaki,Motoki, AU - Sawada,Norie, AU - Yamaji,Taiki, AU - Tsugane,Shoichiro, Y1 - 2011/05/12/ PY - 2010/10/18/received PY - 2011/04/23/accepted PY - 2011/5/13/entrez PY - 2011/5/13/pubmed PY - 2011/10/28/medline SP - 985 EP - 93 JF - Cancer causes & control : CCC JO - Cancer Causes Control VL - 22 IS - 7 N2 - 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. SN - 1573-7225 UR - https://www.unboundmedicine.com/medline/citation/21562752/Green_tea_and_coffee_consumption_and_its_association_with_thyroid_cancer_risk:_a_population_based_cohort_study_in_Japan_ L2 - https://doi.org/10.1007/s10552-011-9771-2 DB - PRIME DP - Unbound Medicine ER -