Hypothyroidism occurs when the thyroid gland does not produce enough of the two main thyroid hormones, triiodothyronine and thyroxine. This deficiency can affect the body in many ways because the thyroid gland helps regulate numerous essential functions. Some people notice goiters or swelling in the neck region, and this may be the first indication of issues with the thyroid gland.
Exhaustion is one of the most common symptoms of hypothyroidism. In addition to physical fatigue, a person may experience low motivation and mental exhaustion. Exhaustion occurs because the hormones the gland produces regulate energy -- too little leads to fatigue. If this symptom is a result of a thyroid issue, getting sufficient sleep will generally not alleviate the problem.
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