title: Breast cancer. Relationship to thyroid supplements for hypothyroidism.
abstract: This study was undertaken to determine the relationship between thyroid supplements and breast cancer. The incidence of breast cancer among the patients who received thyroid supplements was 12.13%, while in the control group it was 6.2%. The incidence rate of breast cancer was 10%, 9.42%, and 19.48% among patients who received thyroid supplements for one to five, 5 to 15, and for more than 15 years, respectively. The incidence of breast cancer among nulliparous women who received thyroid supplements was 33%, while in the nulliparous women without thyroid supplements the incidence was only 9.25%. Even in a specific age group, the incidence rate of breast cancer was higher among patients receiving thyroid supplements, when compared to the control patients in the same age group.
mesh_terms: D000328:Adult; D000368:Aged; D001943:Breast Neoplasms / Q000139:chemically induced* / Q000503:physiopathology; D005260:Female; D006801:Humans; D007037:Hypothyroidism / Q000188:drug therapy*; D008875:Middle Aged; D010298:Parity; D013962:Thyroid (USP) / Q000009:adverse effects; D013961:Thyroid Gland / Q000503:physiopathology; D013963:Thyroid Hormones / Q000009:adverse effects* / Q000138:chemical synthesis / Q000627:therapeutic use; D013997:Time Factors
chemical_list: D013962:Thyroid (USP); D013963:Thyroid Hormones