DHT: The Hormone Everyone Wants to Block (But Should They?)

Here's Why I Don't Block DHT in My Patients

If you've spent any time researching testosterone replacement therapy (TRT), you've probably come across scary warnings about DHT. You'll hear things like: "DHT causes hair loss." "DHT enlarges the prostate." "You need a blocker if you're on testosterone." "High DHT is dangerous."

As a result, many men are prescribed medications designed to lower DHT before anyone explains what DHT actually does. At SomneX Health, we take a different approach. Rather than automatically blocking DHT, we first ask an important question: Is DHT actually causing a problem? Because DHT isn't a toxic byproduct of testosterone. It's one of the most important hormones in the male body.

What Is DHT?

DHT (dihydrotestosterone) is created when testosterone is converted by an enzyme called 5-alpha reductase. In other words, testosterone acts as a pro-hormone to DHT — meaning DHT is a downstream, active form of testosterone that the body intentionally produces.

Many people think of DHT as "bad testosterone," but that's far from the truth. In fact, DHT is approximately 2–5 times more potent at the androgen receptor than testosterone itself. It's a critical hormone involved in libido, erectile function, sexual confidence, mood, motivation, energy, muscle function, male development, and body composition.

Why Is DHT So Important?

Many of the benefits men experience from optimized testosterone levels are actually influenced by DHT. Men with healthy DHT levels often report stronger libido, better erectile quality, improved sexual satisfaction, increased motivation, enhanced confidence, and an improved sense of well-being.

This is one reason some men feel exceptionally good on testosterone cream, particularly scrotal testosterone cream, which tends to produce higher DHT levels than injections. The question shouldn't be: "How low can we get DHT?" The question should be: "Is DHT causing a problem that requires treatment?"

The Hair Loss Question

Yes, DHT is associated with male pattern hair loss. But DHT alone does not cause baldness — genetics play the primary role. Two men can have identical DHT levels: one maintains a full head of hair into his 70s, while the other begins losing hair in his 20s. The difference is not necessarily the hormone level itself. The difference is how genetically sensitive the hair follicles are to DHT.

For men concerned about hair loss, treatment decisions should be individualized rather than automatically suppressing a hormone that provides significant benefits elsewhere in the body.

The Prostate Myth

For decades, men were told that higher testosterone and DHT automatically caused prostate enlargement and prostate cancer. Modern evidence has challenged this simplistic view. While DHT plays a role in prostate physiology, healthy androgen levels alone do not appear to be the primary driver of prostate cancer. In fact, many men with low testosterone develop prostate disease, while many men with healthy testosterone and DHT levels never do. The relationship is significantly more complex than once believed.

The Problem With Blocking DHT

The most common DHT-blocking medications are finasteride and dutasteride. These medications inhibit the conversion of testosterone into DHT. While they can be effective for certain individuals, they are not without potential downsides. Possible side effects may include decreased libido, erectile dysfunction, reduced orgasm intensity, lower sexual satisfaction, fatigue, mood changes, brain fog, and reduced motivation.

Not every patient experiences these issues — some tolerate these medications extremely well. However, if a man is seeking testosterone optimization to improve energy, libido, confidence, and sexual function, it makes little sense to automatically suppress one of the hormones most responsible for those benefits.

Our Philosophy at SomneX Health

We do not routinely prescribe DHT blockers simply because a man is on testosterone therapy. Instead, we focus on symptoms, laboratory evaluation, individual risk factors, patient goals, and shared decision-making. If a patient develops clinically significant hair loss or prostate-related symptoms, we discuss the available options and their potential tradeoffs.

The goal isn't lower testosterone. The goal isn't lower DHT. The goal is better health. Hormones do not operate in isolation — sleep, metabolic health, nutrition, exercise, inflammation, stress, and genetics all influence how a man feels and functions. When we optimize hormones, we are trying to restore balance — not eliminate an essential part of male physiology.