• A+
• A+
• A+

Adjust font size

GuideWisdom™

This WisdomCard managed by: Chris Miller

The thyroid hormones, thyroxine (T4) and triiodothyronine (T3), are tyrosine-based hormones produced by the thyroid gland. An important component in the synthesis is iodine. The major form of thyroid hormone in the blood is thyroxine (T4). The ratio of T4 to T3 released in the blood is roughly 20 to 1. Thyroxine is converted to the active T3 (three to four times more potent than T4) within cells by deiodinases (5'-iodinase). These are further processed by decarboxylation and deiodination to produce iodothyronamine (T1a) and thyronamine (T0a). ...read more at Wikipedia

Fast Facts:

• -- T3 and T4 hormones control how fast the body uses up energy.¹
• -- Thyroid hormone should not be used for weight reduction or to treat obesity.²
• -- TSH test is performed to test TSH, T3 and T4 to diagnose thyroid disorder.³
• -- Common prescriptions: dextrothyroxine, levothyroxine, liothyronine, liotrix, and thyroiglobulin.⁴

Top Resources on Thyroid Hormone

• American Society of Health-System Pharmacists (via MedlinePlus): Thyroid
• American Association for Clinical Chemistry (via Lab Tests Online): TSH
• Healthwise (via WebMD): Information And Resources - Thyroid-Stimulating Hormone (TSH)
• American Thyroid Association: Thyroid Hormone Treatment
• KidsHealth: Thyroid Disorders
• icyou: How The Body Works: The Anterior Pituitary Gland
• YouTube: How The Body Works: The Thyroid Gland

Related WisdomCards

• Thyroid Stimulating Hormone
• Triiodothyronine
• Thyroid Scan
• Thyroid Diseases
• Hyperthyroidism
• Hormones
• Thyroid Cancer
• Hypothyroidism

GuideWisdom and Fast Facts References

1. ↑ KidsHealth: Thyroid Disorders
2. ↑ American Society of Health-System Pharmacists (via MedlinePlus): Thyroid
3. ↑ American Association for Clinical Chemistry (via Lab Tests Online): TSH
4. ↑ American Thyroid Association: Thyroid Hormone Treatment

User Recommended Links for Thyroid Hormone

Are we missing any great links? Please Login or Register to be the first to add to this list of recommended links to help others and improve this WisdomCard.