Fort Lauderdale, Florida
Testosterone replacement therapy has become one of the fastest growing treatments in men’s health. According to CBS News, prescriptions for testosterone in the United States climbed from 7.3 million in 2019 to more than 11 million by 2024, a surge that has coincided with widespread online misinformation linking TRT directly to hair loss. Fort Lauderdale hair transplant surgeon Dr. Brett Bolton says the connection between TRT and hair loss is one of the most persistent and damaging myths in men’s health, and the science tells a fundamentally different story.
According to the American Hair Loss Association, androgenetic alopecia, commonly known as male pattern baldness, accounts for more than 95 percent of hair loss in men. By age 35, approximately two thirds of American men will experience some degree of noticeable hair loss, and by age 50, roughly 85 percent of men will have significantly thinning hair.
The primary biological driver behind this process is dihydrotestosterone, or DHT, a potent androgen derived from testosterone through the enzyme 5 alpha reductase. According to the Cleveland Clinic, DHT binds to receptors on genetically sensitive hair follicles, causing them to shrink and progressively shortening the growth cycle until the hair becomes too fine to survive.
Dr. Bolton, who has practiced exclusively in hair transplant surgery for 29 years, says the distinction between testosterone and DHT is critical for every man considering hormone therapy. “There is a massive difference between testosterone and DHT,” Bolton says. “Testosterone replacement does not rewrite your genetic code. DHT is the molecule that attacks the follicle. Your genetics determine which follicles are vulnerable. TRT does not change that equation.”
According to research published in StatPearls on the National Library of Medicine, DHT binds to the androgen receptor with approximately double the affinity of testosterone and dissociates five times more slowly, making it significantly more potent in driving follicle miniaturization.
Research published in the Journal of Clinical Endocrinology and Metabolism found that men with male pattern baldness produce significantly higher levels of DHT compared to men without the condition, reinforcing the role of localized DHT activity rather than systemic testosterone levels. Bolton says nearly all of his patients are on some form of hormone replacement and not a single case of hair loss was directly caused by TRT.
The fear surrounding TRT and hair loss arrives at a time when the testosterone therapy market is expanding rapidly. According to Global Market Insights, the U.S. TRT market was valued at approximately $736 million in 2024 and is projected to grow steadily through 2034. Meanwhile, according to US Pharmacist, approximately 40 percent of men under the age of 40 have expressed interest in testosterone supplementation, and nearly 14 percent are using or have previously used TRT. As these numbers rise, so does the volume of misinformation.
“Men are canceling TRT because they read something on a forum that told them testosterone would make them go bald,” Bolton says. “That is not how the biology works. When a man starts TRT and notices some shedding, what he is actually seeing is a temporary shock phase. It is the body adjusting. The hair comes back. The men who were already losing hair were going to lose it regardless because their follicles are genetically programmed to respond to DHT.”
Bolton emphasizes that proven preventative treatments exist for men who want to protect their hair while optimizing their hormones. FDA approved medications including finasteride and minoxidil have been clinically demonstrated to slow or halt DHT related follicle miniaturization. According to the International Society of Hair Restoration Surgery, DHT blockers work by inhibiting or reducing the conversion of testosterone into DHT, allowing existing hair to maintain volume and thickness over time.
For men who have already experienced significant loss, the hair restoration industry has grown into a multibillion dollar sector. According to The Business Research Company’s Hair Transplant Global Market Report 2026, the global hair transplant market reached $10.51 billion in 2025 and is projected to grow to $25.72 billion by 2030, reflecting a compound annual growth rate of 19.6 percent. Bolton attributes this growth not only to advancing surgical techniques but also to a shift in how men perceive the decision to restore their hair.
“This is not about vanity,” Bolton says. “When a man loses his hair, he loses a piece of his identity. It affects how he shows up in business, in relationships, in everyday life. Restoring that is a psychological reset. But before we even get to restoration, the first step is getting the science right. And the science is clear: TRT is not your enemy. DHT is.”
Dr. Bolton is available for media interviews to discuss the science of DHT and hair loss, the myths surrounding testosterone replacement therapy, preventative treatment options, and the latest advances in high density hair restoration.
About Dr. Brett Bolton
Dr. Brett Bolton is the founder of Great Hair Transplants and creator of the MaxHarvest™ technique. Practicing exclusively in hair transplant surgery for 29 years, he has treated patients internationally and is recognized as a leading authority in high density, single session restoration. Selected by the World’s Greatest Television Show as “The Greatest Hair Transplant Surgeon in the World,” Dr. Bolton maintains one of the highest patient satisfaction ratings in cosmetic medicine with 822 verified five-star reviews.
