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Dietary factors and thyroid cancer risk: a meta-analysis of observational studies.
Nutr Cancer 2014; 66(7):1165-78NC

Abstract

To better understand the relationship between dietary factors and thyroid cancer risk, we summarized the published evidence on relationship between dietary factors and thyroid cancer incidence. Searching several databases for relevant studies published by March 2014 included a total of 19 studies. We calculated summary odds ratios (ORs) for each risk factor. Based on the highest level of total consumption vs. the lowest level, the summary OR [95% (confidence interval) CI] of thyroid cancer was 0.79 (0.66, 0.94) for fish; 0.95 (0.74, 1.23) for salt water fish; 0.86 (0.63, 1.16) for fresh water fish; 0.76 (0.58, 1.00) for vegetables; 0.88 (0.72, 1.08) for shellfish; 0.93 (0.66, 1.29) for cruciferous vegetables; 0.97 (0.78, 1.21) for fruits; 0.96 (0.70, 1.34) for meat; and 1.11 (0.86, 1.42) for grains. Subgroup analysis showed that fish (OR 0.74, 95%CI: 0.59, 0.92) and shellfish (OR 0.46, 95%CI: 0.27, 0.75) consumption have a protective effect in iodine deficiency areas, whereas the ORs were not statistically significant in iodine-rich areas. Our findings indicated that fish and shellfish consumption may decrease the risk of thyroid cancer in iodine deficiency areas, although no such effect was observed in iodine-rich areas.

Authors+Show Affiliations

a Department of Medical Statistics and Epidemiology, School of Public Health , Sun Yat-sen University , Guangzhou , PR China.No affiliation info available

Pub Type(s)

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

Language

eng

PubMed ID

25256273

Citation

Liu, Zhi-Ting, and Ai-Hua Lin. "Dietary Factors and Thyroid Cancer Risk: a Meta-analysis of Observational Studies." Nutrition and Cancer, vol. 66, no. 7, 2014, pp. 1165-78.
Liu ZT, Lin AH. Dietary factors and thyroid cancer risk: a meta-analysis of observational studies. Nutr Cancer. 2014;66(7):1165-78.
Liu, Z. T., & Lin, A. H. (2014). Dietary factors and thyroid cancer risk: a meta-analysis of observational studies. Nutrition and Cancer, 66(7), pp. 1165-78. doi:10.1080/01635581.2014.951734.
Liu ZT, Lin AH. Dietary Factors and Thyroid Cancer Risk: a Meta-analysis of Observational Studies. Nutr Cancer. 2014;66(7):1165-78. PubMed PMID: 25256273.
* Article titles in AMA citation format should be in sentence-case
TY - JOUR T1 - Dietary factors and thyroid cancer risk: a meta-analysis of observational studies. AU - Liu,Zhi-Ting, AU - Lin,Ai-Hua, Y1 - 2014/09/25/ PY - 2014/9/27/entrez PY - 2014/9/27/pubmed PY - 2015/7/1/medline SP - 1165 EP - 78 JF - Nutrition and cancer JO - Nutr Cancer VL - 66 IS - 7 N2 - To better understand the relationship between dietary factors and thyroid cancer risk, we summarized the published evidence on relationship between dietary factors and thyroid cancer incidence. Searching several databases for relevant studies published by March 2014 included a total of 19 studies. We calculated summary odds ratios (ORs) for each risk factor. Based on the highest level of total consumption vs. the lowest level, the summary OR [95% (confidence interval) CI] of thyroid cancer was 0.79 (0.66, 0.94) for fish; 0.95 (0.74, 1.23) for salt water fish; 0.86 (0.63, 1.16) for fresh water fish; 0.76 (0.58, 1.00) for vegetables; 0.88 (0.72, 1.08) for shellfish; 0.93 (0.66, 1.29) for cruciferous vegetables; 0.97 (0.78, 1.21) for fruits; 0.96 (0.70, 1.34) for meat; and 1.11 (0.86, 1.42) for grains. Subgroup analysis showed that fish (OR 0.74, 95%CI: 0.59, 0.92) and shellfish (OR 0.46, 95%CI: 0.27, 0.75) consumption have a protective effect in iodine deficiency areas, whereas the ORs were not statistically significant in iodine-rich areas. Our findings indicated that fish and shellfish consumption may decrease the risk of thyroid cancer in iodine deficiency areas, although no such effect was observed in iodine-rich areas. SN - 1532-7914 UR - https://www.unboundmedicine.com/medline/citation/25256273/full_citation L2 - http://www.tandfonline.com/doi/full/10.1080/01635581.2014.951734 DB - PRIME DP - Unbound Medicine ER -