Testosterone

Testosterone is an androgen hormone important for libido, muscle, bone, red blood cells and wellbeing. Its level depends on age, sleep, weight, medications, testicular or pituitary disease and test timing.

Metabolic Context

Overly strict dieting and poor sleep can lower it; therapy is prescribed only after the cause is diagnosed. Food, activity and recovery can change the background, but they do not replace diagnosis when symptoms are significant or persistent.