Defense Secretary Pete Hegseth has announced plans to implement annual testosterone level testing for U.S. service members. This initiative, dubbed the "High-T Department of War," will involve mandatory screenings for active duty and reserve personnel aged 30 and older as part of their regular health assessments. Service members younger than 30 will have the option to participate voluntarily.
Hegseth stated that the goal is not artificial enhancement but rather restoring and optimizing natural capabilities, ensuring longevity and the biological foundation needed to sustain combat readiness.
The policy requires mandatory testosterone deficiency screening for all active duty and reserve personnel aged 30 and older. While the Defense Department confirmed the mandatory screening, specific details on the policy’s implementation remain unclear.
Understanding Testosterone Levels:
What constitutes a "healthy" testosterone level varies significantly among individuals and is influenced by factors like sex, age, and symptoms. Medical professionals do not agree on a single definitive number for low testosterone.
- For adult men: Normal testosterone levels generally range from approximately 300 to 1,000 nanograms per deciliter (ng/dL). Studies suggest similar ranges, around 264 to 916 ng/dL.
- For adult women: Testosterone levels are naturally lower. Ranges typically fall between 15 to 46 ng/dL, though some sources indicate a broader range of 15 to 70 ng/dL. Age plays a significant role in these levels.
- Intersex individuals: Those whose anatomy doesn’t align with typical male or female definitions may have different natural hormone production and needs.
- Age-related decline: For men, testosterone levels typically begin to decrease by about 1% to 2% per year starting between the ages of 30 and 40.
When Are Testosterone Levels Considered Too Low?
There is no universal consensus on a specific threshold for low testosterone. While blood tests are the primary method for measurement, other factors are crucial.
- In men: Hypogonadism, or low testosterone, is clinically diagnosed when low hormone levels are accompanied by deficiency symptoms. These can include reduced libido, erectile dysfunction, fatigue, loss of muscle mass, and infertility. A common benchmark for diagnosis is when testosterone levels repeatedly fall below 280 to 320 ng/dL. However, testosterone levels naturally fluctuate, and confirmation often requires at least two morning blood tests on separate days.
- In women: Defining a clear benchmark for testosterone deficiency is challenging. Many standard testosterone tests are not sensitive enough to accurately measure the low levels typically found in women. Diagnosis is usually based on a combination of symptoms and blood test results. Symptoms can include fatigue, decreased libido, loss of muscle tone, and mood changes. Testing might be timed with the menstrual cycle due to hormonal fluctuations.
Physician assistant Katie Horner emphasizes, "It is a challenge to definitively base treatment off of a number. I always say, treat the patient, not the lab value."
Testosterone Replacement Therapy (TRT):
Testosterone replacement therapy, or TRT, involves administering external testosterone to increase a person’s natural levels. It is available in various forms, including patches, injections, pellets, pills, and gels. The specific regimen depends on individual needs and medical recommendations.
Dr. Ravi Iyengar, an endocrinologist, notes that the best candidates for TRT have lab-confirmed low testosterone accompanied by deficiency symptoms. However, he stresses that the primary goal is often to support the body’s natural production, given the potential implications of external hormone use.
Benefits of TRT:
For individuals diagnosed with testosterone deficiency, TRT can alleviate symptoms such as low energy, protect bone density, support metabolic function, and improve libido and sexual health.
Risks of TRT:
A significant risk associated with TRT is that discontinuing the therapy may be difficult or impossible without side effects, including infertility. When external testosterone is administered, the body may reduce its own production. This can lead to decreased sperm production and testicular shrinkage in men. TRT can also exacerbate sleep apnea, cause acne, stimulate prostate growth, and lead to breast tenderness or enlargement. It may also increase red blood cell production, potentially thickening the blood and raising the risk of clots or stroke. For women, side effects can include acne, excessive sweating, and increased facial or body hair.
TRT Options for Women:
While there are no FDA-approved testosterone replacement treatments specifically for women, off-label treatments, often in cream form, can be prescribed. Research suggests these off-label uses may help treat low libido, particularly in women experiencing menopausal changes.
TRT and Gender-Affirming Care:
Testosterone replacement therapy can be considered a form of gender-affirming care. Gender-affirming care is an individualized approach to healthcare that supports a person’s gender identity. While often associated with transgender and gender diverse individuals, its scope is broader. Historically, hormone therapies have been used in various contexts to align physical characteristics with gender identity. Studies indicate that cisgender men, whose gender identity aligns with their sex assigned at birth, also receive procedures that can be gender-affirming. Bioethicists highlight that a patient’s perspective is key in determining if a medical intervention is gender-affirming. Treatments that help individuals feel more comfortable in their bodies and align with their authentic selves can contribute to overall well-being, with gender being a significant aspect of human experience.