What Is the Thyroid Gland and Why Is It Important? Functions, Hormones & Health

RIVEA Vascular Institute | 18 April 2026

The thyroid is a small butterfly-shaped gland located in the front of the neck, but it plays a major role in regulating many important functions in the body. It produces hormones that help control metabolism, energy levels, heart rate, and several other processes essential for overall health.

When the thyroid does not function properly, it can lead to symptoms such as unexpected weight changes, fatigue, hair loss, changes in heart rate, or the development of thyroid nodules. Learn more about the role of the thyroid, common signs that may need attention, and how tests such as thyroid blood tests and ultrasound scans help evaluate thyroid health and support early diagnosis.