Book #5. Michael, Taylor, Ostin, and the rest of the Electroclan go on their most dangerous mission yet as the thrilling action continues in this electrifying fifth installment of the New York Times bestselling series! The resistance movement has been compromised.
The thyroid is like a speed control or accelerator for the body. An overactive thyroid can leave a person feeling 'revved up', even when they should be getting ready to sleep at bedtime. An underactive thyroid slows a person down, and may cause symptoms of depression, fatigue, and weight gain. Thyroid conditions are relatively common, and can be treated.
Symptoms of an Underactive Thyroid. An underactive thyroid gland or hypothyroidism can cause a wide range of different symptoms. Hypothyroidism is a medical condition that happens when the thyroid gland is underactive. The thyroid gland is responsible for producing the hormones thyroxine and triiodothyronine. These hormones regulate the activity of the metabolism, which is the system that generates energy for the body.