Updated September 26, 2026.
Testosterone replacement therapy may help some people with confirmed hypogonadism. It is not an automatic answer to fatigue, erectile difficulties, or normal aging. The earlier version of this article overstated safety and possible disease-prevention benefits.
Start with an accurate diagnosis
Symptoms should be assessed alongside consistently low testosterone results, usually confirmed with a repeat morning fasting test. Your clinician also investigates the cause and other possible explanations for symptoms. Treatment should not be based on an online checklist or a single low result. Read the Endocrine Society guideline.
Benefits have limits
For appropriately diagnosed patients, treatment can address symptoms of testosterone deficiency. Responses differ, and a higher blood level does not guarantee better energy, mood, erections, or quality of life. TRT is not recommended simply to improve blood sugar control in diabetes. Discuss which symptoms you want to improve and how you will decide whether treatment is helping.
What changed in cardiovascular guidance?
In February 2025, FDA announced removal of the boxed-warning language about increased cardiovascular outcomes after reviewing the TRAVERSE trial. FDA also required or strengthened blood-pressure warnings based on monitoring studies. This update does not mean testosterone is risk-free or appropriate for everyone; the trial findings should not be generalized to unsupervised use or excessive doses. See the FDA labeling update.
Safety questions to discuss before starting
Tell your clinician if you are planning fertility, have prostate or breast cancer, elevated hematocrit, untreated severe sleep apnea, uncontrolled heart failure, or a recent heart attack or stroke. These circumstances can make treatment inappropriate or require further evaluation. Testosterone can suppress sperm production. A history of prostate cancer requires individualized specialist discussion—not a general assurance that TRT is safe. Learn about hypogonadism and treatment considerations.
Follow-up is part of treatment
Discuss symptom response, testosterone levels, blood counts, blood pressure, adverse effects, and prostate monitoring when appropriate. Monitoring reduces uncertainty but cannot eliminate every risk. If benefits are absent or risks change, your clinician should reassess the plan.
Read our men’s health evaluation guide or book a consultation. Bring your medication list, prior laboratory results, and fertility goals. This article provides general education rather than a personal treatment recommendation.
