Thyroid Test Guide: Symptoms, Preparation, and Results
The thyroid is a small gland — butterfly-shaped, sitting at the base of the neck — that controls an extraordinary amount. Metabolism, body temperature, heart rate, mood, energy levels, weight, fertility, hair growth. When it works correctly, you don't notice it. When it doesn't, the effects spread across almost every system in the body. What makes thyroid dysfunction particularly difficult to catch is that its symptoms are diffuse, gradual, and easy to blame on other things. Stress. Poor sleep. Getting older. Life being busy. Most people spend months — sometimes years — with an undiagnosed thyroid condition before anyone orders the right blood test. Here's what to know about thyroid testing from symptoms through to understanding your results. Symptoms That Should Prompt Testing The thyroid can malfunction in two directions — underactive or overactive — and the symptoms differ significantly. Hypothyroidism (underactive thyroid): Persistent fatigue that sleep doesn...