Low Testosterone
Also known as: Hypogonadism · Andropause · Testosterone Deficiency Syndrome · Low T
Low testosterone is a clinical state in which a man's circulating testosterone falls below the optimal range and produces symptoms — fatigue, low libido, slow recovery, brain fog, body-composition shift. Diagnosis requires both confirmed biomarkers and symptom correlation.
What you need to know
Low testosterone (clinically: hypogonadism) describes the combination of suppressed total or free testosterone and a recognizable symptom pattern. It is diagnosed against a baseline biomarker panel — total testosterone, free testosterone, SHBG, estradiol, LH, FSH — and never on a single value in isolation. Causes range from primary (testicular) to secondary (pituitary/hypothalamic) origins, with lifestyle, sleep, body composition, and stress acting as modulators. Treatment candidacy is provider-determined and depends on the underlying axis, fertility goals, and cardiovascular context.
How this entity relates
Every entity in the oMeds knowledge graph cross-links to the conditions, biomarkers, medications, and educational surfaces it touches.
Diagnostic biomarkers
Bring this entity into your optimization pathway
Every condition, symptom, biomarker, and medication on oMeds is reviewed by a licensed provider and recalibrated against the standardized biomarker panel.