What to know about testosterone therapy in 2026

Testosterone replacement therapy is one of the most-discussed and least-understood treatments in men's health. The marketing is loud; the evidence base is good but easy to misrepresent. This is a quick primer for patients trying to decide whether to pursue lab work and a consult.

Who actually benefits

TRT is for men with biochemically confirmed low testosterone and symptoms — low libido, low energy, mood changes, reduced exercise tolerance, depressed muscle mass and bone density. Two labs on two separate mornings; a number under 300 ng/dL is generally considered the threshold, but symptoms matter as much as the number.

TRT is not a longevity drug. It is not a substitute for sleep, training, or food. Men who optimize those three first and still have low symptoms are the population that benefits most.

What real protocols look like

• Weekly or twice-weekly testosterone cypionate IM at a starting dose calibrated to your free testosterone and SHBG.
• Periodic labs at 6 and 12 weeks, then quarterly: total + free testosterone, estradiol (sensitive), hematocrit, PSA, lipids.
• Adjuncts like HCG to preserve fertility or anastrozole for estradiol management, used selectively and not by default.

Common mistakes

Single labs without confirmation. Treating numbers without symptoms. Skipping baseline workup. Cranking the dose to chase supraphysiological levels. Ignoring hematocrit. Every one of these is preventable with a competent physician.

If you're considering TRT, work with a board-certified physician who treats this routinely and has standardized protocols. Avoid the cash-pay mills that prescribe the same dose to every patient.