#testosterone

• Anandria — A rare medical and biological term designating the complete absence or severe deficiency of masculine characteristics or androgen hormones (testosterone) in a male individual. In clinical pathology, this structural or functional condition can be caused by genetic anomalies, testicular dysfunctions, or severe disorders of the hypothalamus-pituitary axis, leading to the non-development of secondary sexual characteristics and the appearance of eunuchoid physical traits.
• Androgen — A natural or synthetic hormonal substance (such as testosterone) that stimulates and controls the development and maintenance of male secondary sexual characteristics in vertebrates. As an adjective, it describes any factor, chemical compound, or structural physiological process that induces masculinization or exerts a direct influence on the male reproductive organs.
• Androgen therapy — A medical treatment method consisting of the therapeutic administration of androgen hormones or masculinizing compounds (such as testosterone or its derivatives). This clinical protocol is structurally used in endocrinology for correcting male hypogonadism, in gender-affirming therapies, and in managing certain oncological conditions or severe cachexia states.
• Andromimetic — Pertaining to factors, chemical compounds, behaviors, or psychological states that mimic, copy, or structurally reproduce male physical characteristics, hormonal manifestations, or behavioral patterns. In a rare clinical or pharmacological context, it describes non-steroidal substances that trigger physiological reactions similar to those produced by natural androgen hormones.
• Andropause — A period of progressive physiological decline in male sexual and endocrine functions associated with aging (clinically known as late-onset hypogonadism), structurally characterized by a gradual decrease in testosterone production.
• Androsterone — A natural steroid hormone with weak androgenic activity, structurally produced during testosterone metabolism in the liver or secreted directly by the adrenal cortex and testes. This biochemical compound, historically isolated for the first time by Adolf Butenandt, acts as a chemical messenger and an essential metabolic precursor, being excreted in urine and used as a marker for overall male hormone production.