Overview
What is the Thyroid Gland?
The thyroid is a small, butterfly-shaped gland in your neck. It makes two main hormones, T4 and T3, that control how your body works.
These hormones help your body use energy, keep warm, and keep your organs working properly, including your heart, stomach, muscles, and brain. They're really important for kids' brain growth too. The brain helps to keep the thyroid's hormone levels just right.