Bano A, et al. - An exploratory analysis was conducted of the connection between thyroid function with total life expectancy (LE) and LE with and without cardiovascular disease (CVD), among euthyroid individuals. It was noted that subjects with low-normal thyroid function lived up to 3.5 years longer overall and up to 3.1 years longer without CVD, at the age of 50 years than participants with high-normal thyroid function. Evidence was yielded in support of a reevaluation of the current reference ranges of thyroid function. It could also assist in informing preventive and clinical care.