Chronic Fatigue Syndrome May Be Associated With Low Circulating Levels Of T3 Hormone,

“Some people with the condition known as chronic fatigue syndrome (CFS) have low circulating levels of the thyroid hormone triiodothyronine (T3) and normal levels of thyroid-stimulating hormone (TSH),” researchers found in a study involving “98 patients with CFS and 99 age- and sex-matched controls.” The findings were published online in Frontiers in Endocrinology.