Reversing Hypothyroidism the Natural Way Metabolism is the process that keeps us alive, and it’s controlled by hormones made by a small gland in our neck called the thyroid. This gland produces two important hormones—T3 and T4—that help control energy, heart rate, body temperature, and more. Sometimes, the thyroid becomes underactive, meaning it doesn’t make enough hormones. This co... https://www.freedomfromdiabetes.org/blog/post/reversing-hypothyroidism-naturally/2860