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Exogenous Hormone

Meaning

An exogenous hormone is any hormone introduced into the body from an external source, contrasting with endogenous hormones that are naturally produced within the endocrine system. These substances are typically administered therapeutically to supplement a deficiency, restore hormonal balance, or achieve a specific pharmacological effect on target tissues. Common examples include bioidentical or synthetic preparations of testosterone, estrogen, or thyroid hormones used in replacement therapy.