Thyroid hormone has been shown to be involved in carcinogenesis via its effects on cell proliferation\npathways. The objective of this study is to determine the association between subclinical hypothyroidism (SCH) and\nthe risk of incident cancer and cancer mortality via systematic review.\nMethods: A systematic search was performed on Medline and Pubmed to identify relevant studies. Randomized\ncontrolled trials, and observational studies assessing SCH or its treatment and the risk of incident cancer or cancer\nmortality were identified.\nResults: A total of 7 cohort and 2 case-control studies met our inclusion criteria. In general, these studies were of\nmedium to good quality. Overall, studies revealed no association between SCH and breast and prostate cancer................
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