Is T3 a Steroid Hormone? Debunking Common Misconceptions

T3, or triiodothyronine, is not a steroid hormone but a thyroid hormone produced by the thyroid gland. Unlike steroid hormones, which are lipophilic and derived from cholesterol, T3 is derived from the amino acid tyrosine and iodine. It plays a crucial role in regulating metabolism and energy generation, influencing various physiological systems, including cardiovascular and nervous systems.

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