Testosterone Therapy for Men: 8 Questions to Settle Before You Start

Testosterone replacement therapy, often shortened to TRT, is widely advertised and frequently misunderstood. Some sources present it as a cure for aging, and others as a danger to avoid. Neither picture is accurate. These eight questions cover what the evidence and the FDA actually say, so you can have an informed conversation with a licensed provider. This article is educational and does not replace medical advice.

1. Who is testosterone therapy actually for?

The FDA has approved testosterone products for men who have low testosterone caused by a specific medical condition, such as a disorder of the testicles, the pituitary gland, or the hypothalamus. FDA labeling states that these products have not been established as safe and effective for low testosterone that is related only to aging.

In practice, a diagnosis requires both consistent symptoms and low levels confirmed on at least two morning blood tests.

2. What benefits are realistic?

In men with confirmed low testosterone, studies have shown improvements in sexual desire and function, and modest improvements in mood, bone density, and anemia. Changes in body composition, such as more lean mass and less fat mass, have also been reported.

Evidence is much weaker for energy, memory, and mental sharpness. If fatigue or "brain fog" is your main concern, testosterone may not be the answer, and other causes should be checked.

3. What does it not do?

Testosterone therapy is not a weight loss treatment, an anti-aging treatment, or a performance enhancer for men with normal levels. Taking it when your levels are normal adds risk without established benefit.

4. What about heart risk?

This is where guidance has changed. A large clinical trial of men with low testosterone and elevated cardiovascular risk found no increase in major cardiac events, such as heart attack and stroke, compared with placebo. In 2025, the FDA updated labeling for testosterone products to reflect those results.

The same update added a warning that testosterone can raise blood pressure. The trial also reported more cases of atrial fibrillation, blood clots in the lungs, and acute kidney injury in the testosterone group. "No increase in major cardiac events" is not the same as "no cardiovascular effects," and your provider should review your personal risk.

5. Will it affect my fertility?

Yes, and this is the point men most often learn too late. Testosterone from an outside source signals the body to stop making its own, which lowers sperm production and can lead to infertility while on treatment. Recovery after stopping is common but not guaranteed and can take many months.

If you want children in the future, say so before starting anything. A provider may discuss alternatives that work by stimulating the body's own production instead of replacing it.

6. What are the other risks and side effects?

• Thicker blood. Testosterone raises red blood cell counts, which can increase clotting risk.
• Prostate effects. It can worsen urinary symptoms from an enlarged prostate and is not used in men with prostate or breast cancer.
• Sleep apnea. It may worsen untreated sleep apnea.
• Skin and body changes. Acne, fluid retention, breast tenderness, and smaller testicles can occur.
• Transfer to others. Gels can pass to women and children through skin contact and cause harm.

Testosterone is also a controlled substance, so prescriptions are regulated more tightly than most medications.

7. How is treatment monitored?

Responsible prescribing involves testing before and during treatment. Expect your provider to check:

• Testosterone levels, to confirm the dose is appropriate
• Hematocrit, to watch red blood cell concentration
• PSA, to monitor prostate health
• Blood pressure

Monitoring is usually more frequent in the first year and continues for as long as you are on treatment. A service that prescribes without follow-up testing is not following standard practice.

8. Are there alternatives to testosterone itself?

Sometimes. Depending on the cause, options include treating an underlying condition, changing a medication that lowers testosterone, improving sleep and weight, or using a prescription that encourages the body's own production.

At Nu Image Medical, a licensed provider reviews men's hormone concerns through an online evaluation. One option a provider may consider is compounded enclomiphene in a rapid-dissolve tablet. Enclomiphene is not FDA-approved, and compounded medications are not reviewed by the FDA for safety, effectiveness, or quality. Whether any prescription is appropriate is decided by the provider case by case.

Before you decide

Bring these to your visit: a list of your symptoms and when they began, your current medications, your plans for having children, and any history of heart disease, blood clots, prostate problems, or sleep apnea. Ask what your lab results show, what the goal of treatment would be, and how progress and safety will be tracked.

This content is for educational purposes only and is not medical advice, diagnosis, or treatment. Testosterone is a controlled prescription medication that requires a medical diagnosis, laboratory evaluation, and ongoing oversight by a licensed provider. Compounded medications are prepared by state-licensed compounding pharmacies and are not reviewed or approved by the FDA for safety, efficacy, or quality. Prescription products require an online consultation with a licensed healthcare provider, who will determine whether a prescription is appropriate.