Understanding the T4 Normal Range: What Your Thyroid Numbers Actually Mean
Your thyroid is a small, butterfly-shaped gland located at the base of your neck, yet it acts as the master control center for your body’s energy. It releases hormones that influence nearly every major system—from your heart rate and body temperature to your metabolism and mood. Among these hormones, thyroxine (T4) is the primary player produced by the gland.
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