Testosterone Replacement for Men: What to Expect in the First Year

Low testosterone is one of the most over-diagnosed and under-treated conditions in men's health — over-diagnosed because a single low number on a poorly timed lab doesn't make the case, and under-treated because many men who genuinely qualify never get a thorough workup.

Before starting therapy, we run a full panel: total and free testosterone (morning, fasted, repeated), SHBG, estradiol (sensitive assay), LH, FSH, prolactin, PSA, hematocrit, lipids, and a metabolic panel. Symptoms have to match the labs.

When TRT is the right call, most men notice mood, energy, and libido shifts in the first four to eight weeks. Body composition changes follow over three to six months — but only if resistance training and protein intake are in place.

Side effects we actively manage: elevated hematocrit, estradiol imbalance, fertility suppression (we discuss HCG or enclomiphene for men who want to preserve fertility), and acne. Quarterly labs in year one are non-negotiable.

TRT is a long-term commitment, not a cycle. The men who do best treat it as one part of a broader health strategy — sleep, training, nutrition, stress — rather than a shortcut around any of those.