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Thyroid disease occurs when the thyroid gland, located at the front of the neck, produces either too many or too few hormones. Some common disorders of the thyroid include hyperthyroidism, hypothyroidism, thyroid nodules... More »

www.reference.com Science Human Anatomy Glands & Hormones

Thyroid disease is caused by the overproduction or underproduction of the thyroid hormones, according to WebMD. Overproduction is known as hyperthyroidism, while underproduction is known as hypothyroidism. Both types of ... More »

www.reference.com Health Conditions & Diseases

The common symptoms of an underactive thyroid, or hypothyroidism, include weight gain, muscle weakness, constipation, fatigue and depression, according to the Office on Women's Health. The symptoms of an overactive thyro... More »

www.reference.com Health Conditions & Diseases
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The thyroid gland is located in the neck. It is wrapped around the front of the windpipe, just below the Adam's apple. It is often described as butterfly-shaped because it is made up of two wing-like lobes and a small co... More »

www.reference.com Science Human Anatomy Glands & Hormones

The thyroid gland plays a major role in the human body's everyday functions by secreting hormones that control metabolism, according to Harvard Medical School. Because the thyroid gland produces the substances that influ... More »

www.reference.com Science Human Anatomy Glands & Hormones

An underactive thyroid means the thyroid gland, which is situated low on the front of the neck, is not producing enough thyroxine for the body, according to NHS Choices. This is also known as hypothyroidism. Thyroxine co... More »

www.reference.com Health Conditions & Diseases

The thyroid is located in the lower part of the neck below the Adam's apple. It is composed of two lobes, one on either side of the trachea. It is joined by a bridge, referred to as the isthmus, that stretches over the w... More »

www.reference.com Science Human Anatomy Glands & Hormones