Breast cancer and thyroid disorders are important health challenges commonly encountered in women. The relationship between both conditions still remains unknown. In this study, the frequency of thyroid diseases was investigated in breast cancer patients

Inclusion Criteria:

• women, the age between 18-65 years who were diagnosed with breast cancer, but not underwent surgery, radiotherapy or chemothreapy were included into the study

Exclusion Criteria:

• Those with pregnancy, known liver and renal failure, the history of any malignancy other than breast cancer, undergoing a surgical operation due to breast cancer, also those receiving chemotherapy/radiotherapy for the same reason or undergoing partial or complete thyroid surgery or a surgical operation within the past 6 months, and also the patients taking oral anti-diabetic medication, insulin, steroids, thiazide, anti-psychotics and immuno-suppressive medicines affecting the levels of blood glucose, insulin and IR, smokers and those consuming alcohol were excluded

women, aged between 18-65 years who were diagnosed with breast cancer, but not underwent surgery, radiotherapy or chemothreapy were included into the study as patients groups. Age matched healthy controls were enrolled as controls.