What essential element is contained in the hormone thyroxin produced by the thyroid gland?

Thyroxin, also known as thyroxine or T4, is a crucial hormone produced by the thyroid gland that plays a significant role in regulating metabolism, growth, and development in the body. The essential element contained in thyroxin is iodine. This element is vital because it is incorporated into the structure of the thyroxin molecule, enabling the hormone to perform its biological functions effectively.

Iodine deficiency can lead to several health issues, including goiter (an enlargement of the thyroid gland) and hypothyroidism, which can cause a myriad of metabolic disturbances. The body's requirement for iodine underscores its importance in the synthesis of thyroid hormones, making it an essential dietary nutrient.

Understanding the biochemical role of iodine in hormone production sheds light on how hormones like thyroxin function within the endocrine system and impact overall health and wellness.