Testosterone Replacement Therapy for Hypogonadism

Benefits of TRT

The American College of Physicians and other medical societies recommend testosterone replacement therapy (TRT) for men with confirmed hypogonadism who have both low testosterone levels and associated symptoms, as it can improve libido, bone density, muscle mass, body composition, mood, and quality of life 1, 2
TRT can improve sexual function, including libido and sexual function in hypogonadal men, with evidence suggesting a positive effect on erectile dysfunction 1, 2
TRT can increase muscle mass and reduce body fat, leading to improved body composition 1
TRT can improve bone mineral density, reducing the risk of osteoporosis, particularly in men with low bone density 1, 3
TRT may have cognitive benefits and can reduce depressive symptoms in hypogonadal men, although the evidence is not yet conclusive 1, 2
TRT may improve metabolic parameters, including insulin sensitivity, particularly in men with metabolic syndrome 3, 4

The American Heart Association suggests that TRT may have neutral or possibly beneficial effects on cardiovascular health, although long-term safety data is limited 2, 5
The American Urological Association recommends monitoring prostate-specific antigen and digital rectal examination to detect potential prostate cancer risk, although TRT does not appear to significantly increase this risk 1, 5
Regular hematocrit monitoring is necessary to detect erythrocytosis, a common side effect of TRT, which can occur in up to 44% of men receiving injections 5

The Endocrine Society recommends selecting an appropriate TRT formulation based on patient preference, cost, and clinical factors, including transdermal gels/patches and intramuscular injections 1, 2
The American College of Physicians suggests starting with a recommended dose and titrating based on serum testosterone levels, with a target serum testosterone in the mid-normal range (350-750 ng/dL) 1, 2
Regular monitoring of testosterone levels, hematocrit, prostate-specific antigen, and digital rectal examination is necessary to assess the effectiveness and safety of TRT 1, 5

The American Urological Association and other medical societies do not recommend TRT for "age-related hypogonadism" without clear symptoms and documented low testosterone, and contraindications include breast or prostate cancer, untreated severe sleep apnea, and severe heart failure 3, 4
Patient preferences regarding formulation should be considered, with some preferring gels for convenience and others choosing injections for cost reasons 2