Risks & Side Effects of TRT: What You Need to Know

Testosterone therapy can increase activity in the oil glands of your skin, which may lead to acne or an oily complexion. This tends to show up on the face, shoulders, or back.

For many men, it is a mild and temporary reaction as the body adjusts. Good skincare habits and, if needed, slight adjustments to your treatment plan can help reduce or prevent breakouts.

Some men experience swelling in their ankles, hands, or feet during the early stages of treatment. This is often due to mild water retention, which can occur as hormone levels shift.

While testosterone itself is not directly responsible for fluid retention, it may indirectly affect how the kidneys handle sodium and water.

For most men, this side effect is temporary and improves as the body adapts to treatment. However, higher doses of TRT can increase the likelihood or intensity of water retention. In these cases, adjusting the dosage often brings relief.

The testosterone hormone plays an important role in stimulating the production of red blood cells in the blood. When testosterone levels increase during treatment, it can also lead to a rise in red blood cell count.

However, when red blood cell levels rise too much, it can cause the blood to become thicker than normal, a condition known as polycythemia. Thicker blood flows less easily and may increase the risk of complications like blood clotting.

In some cases, testosterone introduced through hormone therapy in men can be partially converted into estrogen, a natural process known as aromatization. High levels of estrogen may lead to the growth of breast tissue in men, a condition called gynecomastia.

This side effect is generally mild and does not affect everyone. When it does occur, it can be managed by adjusting the dosage or using medications that help regulate estrogen.

One lesser-known effect of testosterone replacement therapy is its impact on sperm production. When external testosterone is introduced, it can signal the body to reduce natural hormone production, including the hormones responsible for sperm development.

As a result, sperm production can decline, sometimes significantly, leading to reduced fertility during treatment. This effect is usually temporary and may improve once the treatment is stopped. However, it is an important factor for men who are planning to have children in the near future.

TRT may have an effect on sleep patterns, particularly for men who have obstructive sleep apnea (OSA). While the exact relationship is not fully understood, some studies suggest that hormone therapy can worsen existing symptoms of OSA in certain people.

One theory is that testosterone may influence the muscles that support the airway during sleep or affect the brain’s regulation of breathing. This can lead to more frequent pauses in breathing at night, heavier snoring, and excessive daytime fatigue.

Hormone levels can affect mood, and some men may report increased irritability, mood swings, or emotional sensitivity when starting testosterone therapy.

Testosterone does not just influence physical health, it can also impact how you feel emotionally. As hormone levels adjust during the treatment, some men may notice mood shifts, including increased irritability, restlessness, or emotional sensitivity.

These effects are usually mild and temporary, often settling as your body finds its new hormonal balance.

These side effects can mostly be effectively managed, or even avoided, with the right approach. The key lies in taking a thoughtful, proactive approach from the very beginning.

A thorough review of your medical history, lifestyle, and baseline lab work helps identify any factors that might influence how your body responds to treatment. This step allows our provider to spot any underlying health issues or risk factors that need to be considered when creating your treatment plan.

Once TRT begins, ongoing monitoring plays a critical role. Regular blood tests help track important markers like hormone levels, red blood cell counts, and overall response to therapy. These results give your provider the information needed to make timely adjustments, keeping your hormone levels balanced while reducing the likelihood of side effects.