TRT (testosterone replacement therapy) is a prescription treatment that restores low testosterone in men. The 2023 TRAVERSE trial showed no increase in heart attack or stroke versus placebo. Modern care uses precise dosing, advanced labs, and may include enclomiphene or hCG to preserve fertility.
What Is TRT and Why Has It Changed?
Testosterone is a primary metabolic driver in men. When we see low levels, we are not just looking at a "low number." We are looking at a possible driver of insulin resistance, cardiovascular strain, and cognitive decline.
For decades, testosterone replacement therapy (TRT) was viewed through fear. Many physicians hesitated to prescribe it, worried about heart attacks or prostate problems. In the era of Medicine 3.0, we move based on data, not dogma.
The new standard of care is not about bodybuilder doses or chasing an arbitrary lab number. The goal is to restore your biology to a healthy, optimized baseline. We use hormone optimization to correct metabolic dysfunction and protect healthspan.
What Did the TRAVERSE Trial Show?
This trial shifted the conversation about TRT and the heart.
The TRAVERSE trial, published in 2023 in the New England Journal of Medicine, was the safety data the field had been waiting for. It was built to answer one question: is TRT safe for the heart?
- The cohort: more than 5,000 men with existing heart risk factors.
- The findings: TRT did not increase major heart events (heart attack, stroke, or cardiovascular death) compared with placebo.
- The bonus: TRT also improved sexual function and corrected anemia in many men.
This study put the "heart attack myth" to rest. From a metabolic point of view, low testosterone is itself a risk factor. Low T drives belly fat and insulin resistance. Restoring testosterone to normal often fixes a broken part of the metabolic engine.
How Do We Personalize TRT for Fertility and Life Stage?
We treat the whole man, not just one lab panel.
There is one important nuance often missed: TRT shuts down natural sperm production. If you are a young professional thinking about starting a family in Fishtown or the suburbs in the next few years, straight testosterone injections may not be the right first step.
We personalize the plan based on your goals:
- Enclomiphene: an oral medication that signals the brain to make more of your own testosterone. It raises levels without shutting down the testicles. Best for men who want to keep fertility.
- hCG (human chorionic gonadotropin): when we use TRT, we often add hCG. It mimics LH (luteinizing hormone) and keeps the testicles working alongside therapy.
- TRT (testosterone cypionate or enanthate): for men who have completed their families or do not need fertility, direct replacement is the gold standard for steady levels and symptom relief.
What Are the Different Delivery Methods for TRT?
We pick precision over convenience.
| Method | Pros | Cons | Fishtown Verdict |
|---|---|---|---|
| Injection (intramuscular or subcutaneous) | 100% bioavailable. Stable, predictable levels. | Requires self-injection. | Gold standard. |
| Topical gel | No needles. | Can transfer to partners or children through skin contact. Absorption varies. | Avoid in most cases. |
| Pellets | "Set and forget" for 3 months. | Builds scar tissue over time. Cannot adjust if levels run too high. | Avoid. |
| Enclomiphene (oral) | Boosts your natural production. Preserves fertility. | Does not work for primary testicular failure. | Best for younger men who want fertility. |
My Perspective

Guidance from the clinic: In my practice, low testosterone is rarely an isolated issue. It is usually part of a bigger metabolic cascade. We act early because I have seen what happens when these signals are ignored for years.
Patients often ask about hair loss. Here is the honest biology. Testosterone converts to DHT (dihydrotestosterone), which can speed up hair loss in men who carry the gene for male pattern baldness.
We have tools to handle this. Topical finasteride can lower DHT at the scalp without much impact on systemic levels. We help you weigh the trade-off in the context of your story. Our focus is function and metabolic health. Lets figure this out together.
Actionable Steps in Philly
How to get a clear baseline.
- Time it right: testosterone drops naturally during the day, particularly after meals. Test before 10 a.m. and fasted to get an accurate number.
- Look at free testosterone: total testosterone is only part of the picture. If your SHBG (sex hormone binding globulin) is high, total T can look normal while free testosterone is low. We always check both.
- Lifestyle first: before we discuss prescriptions, we screen sleep. Untreated sleep apnea, common in high-stress professionals, crushes testosterone. We fix the root cause first.
Were the Chief Medical Officer of your life.
Hormone Optimization
Get a full hormone panel - testosterone, thyroid, cortisol - reviewed by Dr. Ash.
Scientific References
- Lincoff AM, Bhasin S, et al. Cardiovascular Safety of Testosterone-Replacement Therapy. N Engl J Med. 2023;389:107-117. (The TRAVERSE Trial).
- Morgentaler A. Testosterone for Life. Foundational work on safety data and the prostate cancer myth.
- Bhasin S, et al. Testosterone Therapy in Men With Hypogonadism: An Endocrine Society Clinical Practice Guideline. J Clin Endocrinol Metab. 2018.
- Khera M. Male Hormones and Metabolic Health. J Sex Med. 2020.
Related at Fishtown Medicine
- TRT Safety - the cardiovascular and prostate safety data
- TRT vs Enclomiphene - the choice between exogenous testosterone and endogenous stimulation
- What Testosterone Does and Doesn't Do - honest expectations on TRT outcomes
- Men's Hormone Health - the full men's hormone landscape
- Male Fertility - the male fertility workup and treatment options
- Sleep Apnea and Testosterone - why OSA is the most common reversible cause of low T
- Andropause Nutrition - the dietary inputs to men's hormonal health

Fishtown Medicine | Hormones
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