Thyroid Hormones

The Major Thyroid Hormones Are Thyroid Stimulating Hormone (TSH), Thyroxine (T4) & Triiodothyronine (T3)

The pituitary gland is an important endocrine organ located within the brain. It regulates thyroid gland activity by secreting a hormone called Thyroid Stimulating Hormone (TSH).

TSH travels to the thyroid gland to signal the production of the two main thyroid hormones - Thyroxine (T4) and Triiodothyronine (T3). A healthy thyroid gland produces greater quantities of T4 than T3 but T3 is much more potent in the body.

The pituitary gland itself is regulated by another gland, known as the hypothalamus.

The hypothalamus is also found within the brain. This endocrine gland produces TSH Releasing Hormone (TRH).

TRH tells the pituitary gland to stimulate the thyroid gland by releasing TSH.

T3 is the most important thyroid hormone for natural weight loss. It stimulates metabolism and fat burning. If levels are low you will continue to put on weight.

T3 is converted from T4 with low levels of T3 indicating that conversion is not taking place. Stress is a major reason for this as cortisol blocks conversion.

If T4 is not converting to T3 it may instead convert to reverse T3. This condition is known as Reverse T3 Dominance.

If reverse T3 levels are raised metabolism slows down, causing greater weight gain.

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