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Traditional Hormones

Meaning

Traditional Hormones are defined as the classic, well-established chemical messengers secreted by the major endocrine glands, such as the thyroid, adrenal glands, pituitary, and gonads, that travel through the bloodstream to regulate distant target cells. This category includes steroid hormones like cortisol and estrogen, peptide hormones like insulin and growth hormone, and amino acid derivatives like thyroxine. They represent the foundational signaling molecules of the entire endocrine system, essential for systemic homeostasis.