Triiodothyronine (T3) levels in relation to mortality from breast cancer and all-causes: a population-based prospective cohort study.
OBJECTIVE: The potential association between thyroid hormones and breast cancer has been investigated in a large number of studies without conclusive results. This study investigated T3 levels in relation to breast cancer mortality in a population with no breast cancer patients at baseline. An additional aim was to study T3 levels in relation to mortality from other cancers and all-cause mortality