Prostate Cancer Recurrence
Urologists are also wary of testosterone supplementation in patients with a previous history of prostate cancer. According to the AFU’s survey, 40% of urologists questioned think that testosterone is contraindicated in this population. One in two urologists prescribe testosterone after radical prostatectomy for low or intermediate risk and most commonly after 3 years of undetectable prostate-specific antigen (PSA) levels.
Nevertheless, “several retrospective studies show the safety of testosterone replacement therapy in men who have undergone radical prostatectomy or radiotherapy or who are under active monitoring,” said Dr. Huygue. Testosterone “does not appear to increase the risk of relapse” after treatment of prostate cancer.
Dr. Huygue invited prescribing physicians to refer to the French recommendations, which specify that 1 year of undetectable PSA after prostatectomy is sufficient before prescribing replacement therapy. “This is clearly indicated in the recommendations for patients with a previous history of prostate cancer.”
Neither prostate cancer nor benign prostatic hyperplasia is a contraindication. According to the recommendations, the only contraindications to testosterone prescription are the following:
- Hematocrit > 54%
- Current breast or prostate cancer
- Cardiovascular event less than 3-6 months prior
- Trying to conceive
Cardiovascular Benefits
Another more commonly used argument by general practitioners and endocrinologists to justify their reluctance to prescribe testosterone is the risk to cardiovascular health. In early 2010, a series of American studies alerted clinicians to this risk when taking testosterone. Since then, other studies have had reassuring findings.
In response to the alert issued by the United States, the European Medicines Agency specified that “the data are not sufficient for a warning,” before the American Heart Association colleagues concluded that testosterone should only be avoided in the first 6 months following a severe cardiovascular event.
Conversely, in 2021, the European Society of Cardiology put forward the benefits of testosterone in an article in favor of replacement therapy to prevent cardiovascular risk. In particular, the hormone is thought to have a beneficial effect on arterial stiffness, the appearance of calcified plaques, and coronary artery dilatation.
The final hurdle to overcome before a testosterone prescription is filled relates to patients themselves, who often regard such treatment unfavorably. Many wrongly believe that androgens are hormones that “increase the risk of cancer, make you aggressive, cause weight gain, lead to hair loss, and cause body hair growth,” said Dr. Huygue.
Finally, breaks in the supply chain for Androtardyl, the only injectable form available for reimbursement by French social security schemes, were reported in the country in 2023, said Dr. Huygue. This situation only complicates further the prescription and use of testosterone replacement therapy.
Which Supplement?
Testosterone replacement therapies are available on the market in the following formulations:
Via transcutaneous administration: Testosterone-based gels, not covered by the French social security system (Androgel and Fortigel), to be applied daily. Users must be careful to avoid any potential transfer of the product to women or children in case of contact with the site after application.
Via an injection: Androtardyl (testosterone enanthate), covered by French social security, to be administered intramuscularly once a month. Nebido (testosterone undecanoate), not covered by French social security, with a more beneficial bioavailability profile, to be administered once every 3 months.
Pantestone (testosterone undecanoate), administered orally, is not marketed since 2021. It had the major disadvantage of requiring a high-fat diet to ensure optimal absorption.
This article was translated from the Medscape French edition. A version of this article appeared on Medscape.com.