Men will track their protein intake to the last gram, analyze their workout performance like Wall Street analysts, and spend a small fortune on supplements promising eternal youth. Yet ask the average man when he last checked his testosterone levels, and the conversation suddenly becomes remarkably quiet. As a certified fitness trainer, a bodybuilder with more than 20 years of experience, and Co-Founder of Aláry Health Spa, I believe that conversation deserves considerably more attention.
Beyond the Gym: Testosterone Replacement Therapy and the New Science of Men’s Longevity – By Maxwell Alexander, MA, BFA — Artist/Activist, Men’s Health Advocate, Co-Founder of Aláry Health, Certified Fitness Trainer, Bodybuilding & Sports Nutrition Coach – Photography by Maxwell Alexander for Duncan Avenue Studios
I’m also a man who uses Testosterone Replacement Therapy (TRT) as part of my own healthcare. My personal experience has strengthened my commitment to helping men understand their hormonal health through medical science, thoughtful clinical evaluation, and informed decisions. From the gym to the bedroom, from emotional well-being to healthy aging, testosterone influences aspects of men’s lives that deserve serious medical attention.
America’s Testosterone Levels Are Declining, and the Research Deserves Our Attention
One of the most revealing developments in men’s health research concerns the decline in testosterone concentrations documented across successive generations of American men. Scientists have observed changes extending beyond the hormonal effects normally associated with getting older, raising important questions about the relationship between modern living and male reproductive health.
A landmark study published in the Journal of Clinical Endocrinology & Metabolism examined men participating in the Massachusetts Male Aging Study between 1987 and 2004. Researchers identified a substantial population-level decline in testosterone that remained evident after accounting for age and several measured lifestyle and health factors.
More recently, a 2020 study published in European Urology Focus analyzed testosterone measurements from 4,045 adolescent and young adult men using National Health and Nutrition Examination Survey data collected between 1999 and 2016. The researchers reported significantly lower average testosterone concentrations in later survey periods, including a decline among men with normal body mass indexes.
In the underlying analysis, average total testosterone concentrations ranged from approximately 605 ng/dL in the 1999–2000 sample to 451 ng/dL in the 2015–2016 sample. Differences in laboratory methods and other study limitations deserve consideration, and these figures cannot establish the lowest testosterone levels in all of human history. They do, however, document a consequential downward trend within modern American measurements.
For men who assume low testosterone belongs exclusively to the world of retirement communities and pharmaceutical commercials, the younger participants in this research offer a compelling reason to reconsider. Hormonal health belongs in the larger conversation about preventive medicine throughout adulthood.
PFAS, Plastics, and the Environmental Questions Facing Men’s Hormonal Health
Modern men inhabit a remarkably complex chemical environment. Our daily routines bring us into contact with synthetic compounds through consumer products, food packaging, household materials, and contaminated water. Researchers studying endocrine-disrupting chemicals are investigating how some of these exposures may influence the hormonal systems governing reproduction and metabolism.
PFAS, or per- and polyfluoroalkyl substances, have attracted scientific attention because of their environmental persistence and potential health effects. A 2024 meta-analysis involving 7,506 participants identified negative associations between testosterone concentrations and exposure to two PFAS compounds, PFOA and PFNA. The findings suggest possible endocrine effects while leaving important questions about causality, exposure levels, and differences among individual chemicals unanswered.
Researchers have also investigated phthalates, a family of chemicals used in certain plastics and consumer products. A 2025 systematic review and meta-analysis examining more than 12,000 participants found associations between exposure markers for certain phthalates and changes in reproductive hormone regulation. The evidence continues to evolve, with effects varying across the chemicals and hormones studied.
These findings merit public attention because hormonal health develops within an environmental context. PFAS and plastic-associated chemicals remain subjects of active investigation, and researchers have yet to establish that they explain the broader population-wide decline in testosterone. Understanding the potential risks can support smarter environmental policy and more informed personal health decisions.
Stress, Sleep, and the Emotional Side of Testosterone Deficiency
Hormonal health also intersects with the psychological demands of contemporary life. Chronic stress, disrupted sleep, metabolic disease, and depression can affect health through interconnected physiological pathways. When a man experiences fatigue, declining sexual desire, difficulty concentrating, or emotional changes, a thorough medical evaluation can help identify what is happening beneath the surface.
Sleep provides an especially revealing example. In a small 2011 study published in JAMA, restricting healthy young men’s sleep to approximately five hours nightly for one week was associated with a 10% to 15% decline in daytime testosterone concentrations. Subsequent research has produced mixed findings, emphasizing the complexity of the relationship between sleep duration and hormone levels.
The connection between testosterone and emotional health deserves equal consideration. Men with testosterone deficiency may experience depressed mood, reduced motivation, and difficulty concentrating. A systematic review and meta-analysis published in JAMA Psychiatry, encompassing 27 randomized clinical trials and 1,890 participants, found that testosterone treatment was associated with modest improvements in depressive symptoms.
Depression has many potential causes, and hormone treatment serves a defined medical purpose. Testosterone therapy should never be treated as a universal antidepressant or a substitute for appropriate mental health care. I believe men deserve healthcare that examines the relationship between their physical and psychological well-being with equal seriousness.
At Aláry, this philosophy connects our approach to hormone health with access to mental health services. A conversation about persistent fatigue or mood changes may lead to hormonal testing, mental health evaluation, or a broader assessment of sleep and metabolic health. Good medicine follows the evidence wherever it leads.
Bodybuilding After 40: Why Testosterone Matters for Muscle, Strength, and Metabolic Health
After more than two decades of bodybuilding, I understand the profound relationship between muscular development and hormonal physiology. Resistance training teaches discipline, patience, and respect for the body’s capacity to adapt. It also teaches that progress depends on biological processes operating well beyond the weight room.
Testosterone contributes to the maintenance of lean muscle mass and bone density. It plays a role in sexual function and the regulation of several physiological processes associated with healthy aging. Men experiencing clinically significant testosterone deficiency may notice changes in muscle mass, strength, body composition, and overall physical performance.
For men entering their forties and fifties, these changes can become especially frustrating. A training program that once produced reliable results may feel considerably more demanding, while recovery and body composition begin to change. Several factors can contribute, including shifts in physical activity, nutrition, sleep quality, underlying illness, and hormone levels.
The relationship between body fat and testosterone can also work in both directions. Obesity is associated with reduced circulating testosterone concentrations, although the mechanism and clinical significance vary. A 2025 clinical review emphasized that substantial weight loss can reverse many obesity-associated testosterone reductions, highlighting the value of evaluating potentially reversible causes before prescribing hormone therapy.
For men with confirmed symptomatic testosterone deficiency, appropriately prescribed TRT may improve lean body mass and certain measures of physical function. The objective is restoration of physiological hormone levels under medical supervision. Building a healthy body continues to depend on progressive training, appropriate nutrition, and adequate recovery.
My own philosophy of fitness embraces both the discipline of the gym and the value of modern healthcare. I use TRT as part of my personal medical care, and I encourage men to become better informed about their hormonal health. A laboratory result can reveal valuable information that even the most experienced bodybuilder cannot determine by examining his reflection.
What Is Testosterone Replacement Therapy, and How Can It Help?
Testosterone Replacement Therapy is a prescription medical treatment designed to restore testosterone to an appropriate physiological range in men with clinically diagnosed testosterone deficiency, also called male hypogonadism. The diagnosis is based on compatible symptoms or signs together with consistently low testosterone measurements and evaluation of the underlying cause.
When medically indicated, TRT can help improve symptoms related to testosterone deficiency, especially reduced sexual desire and certain changes in body composition. Depending on the patient, treatment may also provide benefits involving bone health, anemia, or mood. Response varies considerably, making individualized treatment and follow-up essential.
At Aláry Health Spa’s TRT for Men program, the process begins with a medical consultation, health history, laboratory assessment, and symptom review. Licensed medical professionals evaluate the findings and determine whether testosterone treatment is appropriate. Available treatment approaches may include testosterone injections, with ongoing monitoring and adjustments based on the patient’s clinical response.
Every man brings his own health history into the examination room. A clinician may identify hormone deficiency requiring treatment, a reversible cause of reduced testosterone, or another medical condition responsible for similar symptoms. The purpose of professional evaluation is to make those distinctions and develop a plan grounded in evidence.
Men’s Healthcare Begins With Knowing Your Numbers
I encourage every man to develop a relationship with a qualified healthcare provider and take an informed interest in his hormonal health. Men experiencing persistent symptoms of testosterone deficiency, or those with relevant medical risk factors, should discuss whether laboratory testing is appropriate. That conversation can become an important investment in long-term health.
According to the American Urological Association, a total testosterone concentration below 300 ng/dL is a reasonable diagnostic threshold when considered alongside compatible symptoms. The organization recommends confirming low levels through two separate early-morning blood tests. Clinical interpretation may also require free testosterone measurements and additional testing to identify the cause.
Routine testosterone screening for every asymptomatic man is not recommended by the Endocrine Society. Men with suggestive symptoms or certain associated medical conditions have stronger reasons to request an evaluation. The goal of hormone testing is informed medical care, supported by a physician or other qualified licensed clinician who can interpret the results in context.
What I want men to understand is that fatigue, low libido, muscle loss, and changes in emotional well-being deserve thoughtful attention. Asking questions about your hormones is an expression of responsibility toward yourself, your relationships, and the future you hope to enjoy.
TRT for Men: Frequently Asked Questions
What are the most common symptoms of low testosterone?
Possible symptoms include reduced sexual desire, fewer spontaneous erections, persistent fatigue, decreased muscle mass, impaired concentration, depressed mood, and reduced physical performance. Some men experience declining bone density or unexplained anemia. These symptoms can overlap with sleep disorders, thyroid disease, depression, medication effects, and other conditions, so testing and medical evaluation are essential.
At what age should men have their testosterone checked?
Men can experience testosterone deficiency at different ages. Testing is especially relevant when compatible symptoms develop or certain medical conditions increase the likelihood of deficiency. Age alone provides limited information about an individual’s hormone health. A clinician can determine whether testing is warranted based on symptoms, medical history, medications, and risk factors.
How are testosterone levels tested?
Testing usually begins with a blood sample collected in the early morning, when testosterone concentrations are generally highest. A low result should be confirmed on a separate morning, preferably using the same laboratory. Depending on the findings, clinicians may assess free testosterone, sex hormone-binding globulin, luteinizing hormone, follicle-stimulating hormone, prolactin, and other relevant laboratory markers.
Is a testosterone level below 300 ng/dL always a reason to begin TRT?
A value below 300 ng/dL supports consideration of testosterone deficiency under American Urological Association guidance, but an isolated laboratory result cannot establish whether treatment is appropriate. Clinicians evaluate repeat measurements, symptoms, and possible underlying causes. Some men benefit from addressing reversible health factors, while others may require medical treatment for confirmed hypogonadism.
Can TRT help men build muscle and reduce body fat?
Testosterone treatment can improve lean body mass in men with genuine testosterone deficiency and may produce modest changes in fat mass. Results depend on the patient’s health and treatment response. TRT is prescribed to treat testosterone deficiency, and exercise and nutrition remain central to improving muscular fitness and metabolic health.
Can testosterone therapy help with depression and brain fog?
Testosterone deficiency can contribute to symptoms involving mood and concentration. Some clinical trials have found modest improvements in depressive symptoms during testosterone treatment, although evidence for meaningful cognitive improvements is less convincing. Men experiencing depression, anxiety, or persistent cognitive difficulties should receive an appropriate medical and mental health evaluation regardless of testosterone status.
Are PFAS and plastics responsible for low testosterone?
Scientists have identified associations between exposure to some PFAS compounds, certain plastic-associated chemicals, and changes in reproductive hormone measurements. These findings raise legitimate concerns about endocrine-disrupting substances. Current evidence cannot establish that an individual man’s testosterone deficiency was caused by these exposures, and different compounds may have different hormonal effects.
How is testosterone replacement therapy administered?
TRT can be administered through prescription injections, topical gels, and other approved formulations. Aláry’s TRT program describes injectable testosterone options, including testosterone cypionate or enanthate, when selected by the treating clinician. The formulation and schedule depend on the patient’s medical needs and preferences.
Can TRT affect fertility?
Yes. External testosterone can suppress the body’s production of sperm and may significantly reduce fertility. Men who are planning to have children should discuss fertility goals before considering TRT. Specialized alternatives or fertility-preserving approaches may be appropriate in some circumstances under the supervision of a qualified clinician.
Is testosterone replacement therapy safe for the heart?
Cardiovascular safety depends on an individual’s health and appropriate treatment monitoring. The large TRAVERSE clinical trial found that testosterone treatment did not increase the trial’s primary measure of major cardiovascular events compared with placebo in men with hypogonadism and existing cardiovascular disease or elevated cardiovascular risk. However, the testosterone group experienced higher rates of certain events, including atrial fibrillation and pulmonary embolism. Testosterone products can also increase blood pressure. These findings make individualized risk assessment and monitoring essential.
What monitoring is needed during TRT?
Licensed clinicians monitor testosterone concentrations, blood counts and hematocrit, treatment response, and possible side effects. Blood pressure and prostate-related considerations may also require evaluation based on age, history, and clinical risk. Monitoring helps providers adjust therapy safely and identify complications such as elevated red blood cell concentrations.
How quickly can men notice results from TRT?
Some symptoms may begin improving within several weeks, while changes in muscle mass, body composition, and bone health generally develop over longer periods. Individual responses vary, and some symptoms may persist because of other medical or psychological causes. Follow-up appointments help determine whether the treatment is providing meaningful clinical benefits.
Will I need TRT for the rest of my life?
The duration of treatment depends on the underlying cause of testosterone deficiency, clinical response, and the patient’s long-term health goals. Certain causes of hypogonadism may require sustained hormone replacement, while other situations call for reassessment of reversible factors. Men considering treatment should discuss its potential long-term implications with their provider and avoid stopping or changing prescriptions independently.
What happens if my testosterone levels are normal?
Normal testosterone measurements can help direct attention toward other explanations for symptoms such as fatigue, weight gain, or decreased motivation. A clinician may recommend assessment of sleep quality, metabolic health, thyroid function, medications, or psychological well-being. Understanding the results remains valuable even when testosterone treatment is unnecessary.
The Future of Men’s Wellness Starts With Taking Hormonal Health Seriously
My commitment to men’s health comes from a lifetime of appreciating what the human body can accomplish. Bodybuilding introduced me to the extraordinary relationship between physical effort and physiology, while my work at Aláry Health Spa has deepened my commitment to accessible, scientifically informed conversations about wellness.
As someone personally receiving testosterone replacement therapy, I am comfortable discussing my own healthcare journey. I want other men to feel equally empowered to ask questions, request appropriate medical evaluations, and participate confidently in decisions about their treatment. A healthy relationship with masculinity begins with respect for the body and the freedom to care for it. I explore this relationship between men’s health, mental well-being, and personal freedom in Hudson Valley Style Magazine’s Modern Masculinity series.
Men experiencing symptoms associated with low testosterone deserve the opportunity to discover what their hormones may be telling them. I encourage them to connect with the licensed medical providers offering services at Aláry Health Spa and discuss whether testosterone testing or a broader health evaluation makes sense.
Twenty years in the gym have given me enormous respect for strength. Today, that respect also includes the intelligence to seek professional medical guidance and the confidence to invest in a healthier future.
→ Explore Testosterone Replacement Therapy for Men at Aláry Health Spa
Learn more about medically guided TRT consultations, hormone testing, treatment options, and personalized follow-up care through Aláry Health Spa in Poughkeepsie, New York. Your care begins with a consultation and an individualized evaluation by a licensed medical professional.
→ Explore Mental Health and Emotional Wellness Services at Aláry Health
Discover professional mental health services that support emotional well-being as an essential component of comprehensive healthcare.
About the Author: Maxwell Alexander, MA, BFA, Certified Fitness Trainer, Bodybuilding & Sports Nutrition Coach
Maxwell Alexander is the Co-Founder and Chief Marketing Officer of Aláry Health Spa, a Certified Fitness Trainer, Bodybuilding & Sports Nutrition Coach, and an artist and photographer. With more than 20 years of bodybuilding experience, Alexander brings a personal perspective to men’s fitness, hormonal health, and healthy aging. His advocacy combines physical wellness with a commitment to informed healthcare and emotional well-being. Alexander is also personally undergoing Testosterone Replacement Therapy, an experience that informs his interest in men’s hormonal health education.
Medical Disclosure: This article is educational and reflects the author’s personal perspective. It is not individualized medical advice or a recommendation to begin testosterone treatment. Medical services, including TRT, at Aláry Health are provided by Guardian MD Medical Group NY PLLC, a licensed medical practice operating at Aláry Health in Poughkeepsie, New York. Mental health counseling services are provided by HIIAH Mental Health Counseling, P.C. Treatment eligibility and prescribing decisions are determined by licensed medical professionals following an appropriate clinical evaluation. Individual results vary.
Resources and Further Reading: Testosterone Research, Men’s Health, and Aláry Health
The following publications and clinical guidelines underpin the research discussed in this article. Additional Hudson Valley Style Magazine features expand on the relationship between bodybuilding, mental health, modern masculinity, and healthy aging.
Scientific Studies and Clinical Guidelines
- Population-Level Decline in Serum Testosterone Levels in American Men — Massachusetts Male Aging Study; Journal of Clinical Endocrinology & Metabolism (2007).
- Decline in Serum Testosterone Levels Among Adolescent and Young Adult Men in the USA — European Urology Focus; published online in 2020.
- Association Between Per- and Polyfluoroalkyl Substances and Sex Hormone Levels in Males Based on Human Studies — Ecotoxicology and Environmental Safety (2024), meta-analysis of PFAS exposure and sex hormones.
- Urinary Concentrations of Di-butyl Phthalate Isomers and Reproductive Hormonal Parameters in Adult Men — Environmental Toxicology and Pharmacology; published online December 2025, in the 2026 journal volume.
- Effect of 1 Week of Sleep Restriction on Testosterone Levels in Young Healthy Men — JAMA (2011).
- Association of Testosterone Treatment With Alleviation of Depressive Symptoms in Men: A Systematic Review and Meta-analysis — JAMA Psychiatry (2018 online; 2019 issue).
- Approach to the Patient: Low Testosterone Concentrations in Men With Obesity — Journal of Clinical Endocrinology & Metabolism (2025).
- Cardiovascular Safety of Testosterone-Replacement Therapy (TRAVERSE Trial) — New England Journal of Medicine (2023).
- Testosterone Deficiency Guideline — American Urological Association; diagnostic criteria and recommendations for laboratory assessment and treatment.
- Testosterone Therapy for Hypogonadism: Clinical Practice Guideline — Endocrine Society (2018); diagnostic testing, screening, and treatment considerations.
Men’s Health and Modern Masculinity — Hudson Valley Style Magazine
- Modern Masculinity Editorial Series — Ongoing features exploring men’s health, body autonomy, emotional wellness, and contemporary masculinity.
- Bodybuilding After 40 with Maxwell Alexander — Training, recovery, preventive healthcare, and fitness after 40.
- Modern Masculinity, Mental Health, and the Courage to Feel — A closer look at emotional wellness and men’s health.
- Bodybuilding, Testosterone, and the Art of Longevity: A Decade of Discipline — Maxwell Alexander’s perspective on longevity and the male physique.
- Why Your T-Levels Are Ghosting You (and How to Get That Main Character Energy Back) — Bodybuilding 101 and testosterone awareness.
- You Are What You Eat, So Make It Iconic — Bodybuilding nutrition and mental strength with Coach Maxwell Alexander.
Aláry Health Services and Leadership
- Testosterone Replacement Therapy for Men at Aláry Health Spa — Information about hormone testing, medical consultations, and TRT treatment options.
- Mental Health Services at Aláry Health Spa — Counseling and emotional wellness support.
- Maxwell Alexander, MA, BFA — Aláry Health Co-Founder — Executive leadership and professional profile.
