Consensus on serum DHT's hair loss effect?

[Observer]

I get the impression that the question of androgenic alopecia's direct relation to serum DHT levels is something that's not entirely agreed upon in the community. It seems like some believe that high serum DHT will inevitably attack the hair follicles, while others are of the opinion that it's more of a local phenomenon, and a higher free testosterone presents an opportunity to be converted to DHT near the hair itself. Please let me know if I'm not representing that argument accurately.

I suppose the real question I'm asking here is whether you guys think the responsible use of DHT itself via cream, injection, or otherwise is likely to speed up balding to a significant degree. This would be DHT use alongside testosterone and hCG.

 

[Cataceous]

You're right about the question not being settled. I have an anecdote that could suggest systemic DHT is not entirely benign with respect to hair loss. Before switching to injections I used Androgel for maybe two or three months, during which I had unremarkable serum testosterone. In this period facial and body hair reacted and grew like never before and never since, even with higher levels of testosterone. Therefore it might be inferred that systemic DHT can affect the hair follicles, for better or for worse.

I wrestle with that question of "responsible use". I have some injectable DHT in reserve for experimentation, because it's possible that adding 0.5-1.0 mg/day to my current protocol would be beneficial—my DHT tends to run low, and I also use topical 5ar inhibitors to lessen hair loss. However, given my low hair density at the crown it might not take much to go past the point of no return. So for now the DHT stays in the drawer.

 

[madman]

I get the impression that the question of androgenic alopecia's direct relation to serum DHT levels is something that's not entirely agreed upon in the community. It seems like some believe that high serum DHT will inevitably attack the hair follicles, while others are of the opinion that it's more of a local phenomenon, and a higher free testosterone presents an opportunity to be converted to DHT near the hair itself. Please let me know if I'm not representing that argument accurately.

I suppose the real question I'm asking here is whether you guys think the responsible use of DHT itself via cream, injection, or otherwise is likely to speed up balding to a significant degree. This would be DHT use alongside testosterone and hCG.

When it comes to MPB/AGA your chance of accelerating such when using exogenous T comes down to genetics and sensitivity of the AR/hair follices to DHT.

Important point often overlooked here is that high DHT is not always needed as again it comes down to the sensitivity of the AR/hair follices to DHT.

MPB is genetic and regardless of whether one is on T-theray or natty it is inevitable and will happen at a certain time point in ones life.

Some experience it in their early 20s whereas in others it will not start until decades later.

Testosterones metabolite DHT plays a big role here but it really comes down to the sensitivity of ones AR to DHT and ones threshold as balding can happen even in genetically prone individuals with lower DHT levels.

Testosterone use/abuse can speed up the process in genetically prone individuals.




* The development of AGA is driven by increased local androgen metabolism, rather than systemic hormone levels. In AGA, men typically have normal circulating testosterone levels but demonstrate heightened local conversion of testosterone to DHT, via increased 5α -reductase activity, particularly in androgen-sensitive areas such as the vertex and frontal scalp [21] [22]. Elevated DHT binds to ARs in hair follicles’ dermal papillary cells, leading to the gradual miniaturization of terminal hairs into vellus-like hairs, eventually leading scalp hair thinning [21]. Additionally, DHT promotes perifollicular fibrosis, an irreversible process closely related to hair follicle degradation [23].

Thread 'Pathophysiology of Androgenetic Alopecia and Implications for Treatment'

Mar 27, 2026

Key points here!

* Genetic variants, including polymorphisms in the androgen receptor (AR) gene, influence individual susceptibility and therapeutic response.




Highlights

* Androgenetic alopecia (AGA) is the most common form of hair loss, affecting both men and women through a progressive follicular miniaturization. While historically considered a non-inflammatory and cosmetic condition, growing evidence reveals a multifactorial pathogenesis involving genetic predisposition, hormonal dysregulation, sebaceous gland alterations, lipidomic changes, and...

• madman
• Aga androgen receptor dht hair follicle testosterone
• Replies: 2
• Forum: Testosterone Side Effect Management

 

[Observer]

I wrestle with that question of "responsible use". I have some injectable DHT in reserve for experimentation, because it's possible that adding 0.5-1.0 mg/day to my current protocol would be beneficial—my DHT tends to run low, and I also use topical 5ar inhibitors to lessen hair loss. However, given my low hair density at the crown it might not take much to go past the point of no return. So for now the DHT stays in the drawer.

To quantify my definition of responsible use, I was thinking around the same numbers as yourself. Maybe upwards of 2 mg/day at most.

I recently came across a theory similar to what you're describing, where someone uses a 5ar inhibitor alongside exogenous DHT/TRT to fortify themselves from the inhibitor's potential negative effects. I've never seen an actual report of it being attempted, but the concept seems to make sense.

 

[Observer]

When it comes to MPB/AGA your chance of accelerating such when using exogenous T comes down to genetics and sensitivity of the AR/hair follices to DHT.

Important point often overlooked here is that high DHT is not always needed as again it comes down to the sensitivity of the AR/hair follices to DHT.

MPB is genetic and regardless of whether one is on T-theray or natty it is inevitable and will happen at a certain time point in ones life.

Some experience it in their early 20s whereas in others it will not start until decades later.

Testosterones metabolite DHT plays a big role here but it really comes down to the sensitivity of ones AR to DHT and ones threshold as balding can happen even in genetically prone individuals with lower DHT levels.

Testosterone use/abuse can speed up the process in genetically prone individuals.




* The development of AGA is driven by increased local androgen metabolism, rather than systemic hormone levels. In AGA, men typically have normal circulating testosterone levels but demonstrate heightened local conversion of testosterone to DHT, via increased 5α -reductase activity, particularly in androgen-sensitive areas such as the vertex and frontal scalp [21] [22]. Elevated DHT binds to ARs in hair follicles’ dermal papillary cells, leading to the gradual miniaturization of terminal hairs into vellus-like hairs, eventually leading scalp hair thinning [21]. Additionally, DHT promotes perifollicular fibrosis, an irreversible process closely related to hair follicle degradation [23].

Thread 'Pathophysiology of Androgenetic Alopecia and Implications for Treatment'

Mar 27, 2026

Key points here!

* Genetic variants, including polymorphisms in the androgen receptor (AR) gene, influence individual susceptibility and therapeutic response.




Highlights

* Androgenetic alopecia (AGA) is the most common form of hair loss, affecting both men and women through a progressive follicular miniaturization. While historically considered a non-inflammatory and cosmetic condition, growing evidence reveals a multifactorial pathogenesis involving genetic predisposition, hormonal dysregulation, sebaceous gland alterations, lipidomic changes, and...

• madman
• Aga androgen receptor dht hair follicle testosterone
• Replies: 2
• Forum: Testosterone Side Effect Management

Besides the standard visual measurement using the Norwood scale to determine your current stage of hair loss, is there any way to know whether a particular individual will be more susceptible to MPB? Some kind of objective metric that helps define the level of risk?

 

[madman]

Besides the standard visual measurement using the Norwood scale to determine your current stage of hair loss, is there any way to know whether a particular individual will be more susceptible to MPB? Some kind of objective metric that helps define the level of risk?

Your best bet would be family history.

Look at the men on both sides of your family (father, brothers, grandfathers, and uncles).

Pay attention to what age they started losing hair and how severe it became.

 

[FunkOdyssey]

In AGA, men typically have normal circulating testosterone levels but demonstrate heightened local conversion of testosterone to DHT, via increased 5α -reductase activity, particularly in androgen-sensitive areas such as the vertex and frontal scalp [21] [22].

Before switching to injections I used Androgel for maybe two or three months, during which I had unremarkable serum testosterone. In this period facial and body hair reacted and grew like never before and never since, even with higher levels of testosterone.

I think both of these statements are true. I think in most cases, local tissue production of DHT from testosterone dominates the picture, however, when systemic DHT has been raised high enough (supra physiologic), it may also become a significant factor.

 

[Observer]

I think both of these statements are true. I think in most cases, local tissue production of DHT from testosterone dominates the picture, however, when systemic DHT has been raised high enough (supra physiologic), it may also become a significant factor.

Unfortunate! So you think it's likely that an inclusion of exogenous DHT into a protocol will inherently increase the risk of hair loss? Especially if DHT raises outside normal physiological bounds?

I ask because I've seen a good number of posts where people are doing that very thing for the benefits it provides. I suppose they're playing the odds and perhaps paying a cost.

 

[FunkOdyssey]

Unfortunate! So you think it's likely that an inclusion of exogenous DHT into a protocol will inherently increase the risk of hair loss? Especially if DHT raises outside normal physiological bounds?

I think it depends on the individual, because I've seen many people claim no differences in hair loss between scrotal cream and injections, indicating a lack of sensitivity to systemic DHT, as well as the opposite.

Like most else with HRT, there's no reliable prediction, just n=1 trial and error.

 

[madman]

Unfortunate! So you think it's likely that an inclusion of exogenous DHT into a protocol will inherently increase the risk of hair loss? Especially if DHT raises outside normal physiological bounds?

I ask because I've seen a good number of posts where people are doing that very thing for the benefits it provides. I suppose they're playing the odds and perhaps paying a cost.

Dr. Donavan

13:15-26:54

* Most men with balding have normal serum DHT levels and normal serum androgen levels, it is true that some men do have higher levels but most men have normal levels, but when you look at the levels of DHT in the scalp they are increased in men who are balding compared to males who are not balding

13:15-26:54

Thread 'Diagnosis and Treatment of Male Pattern Balding (Male Androgenetic Alopecia)'

Dec 22, 2022

Dr. Donovan is a Canadian dermatologist specializing in hair loss. In this video, Dr. Donovan discusses an approach to the diagnosis and treatment of male pattern balding, which is also known as male androgenetic alopecia.

Dr. Donovan discusses (1) what is known about male pattern balding, (2) how to properly diagnose the condition (3) the conditions that are common mimickers of balding in men, and (4) the treatments that have the best evidence in treating male pattern balding. This lecture was given as part of a series of hair lectures to visiting...

• madman
• Alopecia Diagnosis Management
• Replies: 22
• Forum: Testosterone Side Effect Management

• 

 

[Observer]

Most men with balding have normal serum DHT levels and normal serum androgen levels, it is true that some men do have higher levels but most men have normal levels, but when you look at the levels of DHT in the scalp they are increased in men who are balding compared to males who are not balding

That makes it sound like a local phenomenon, likely for men who are especially predisposed to it. But if we were to put all the pieces of the puzzle together, it does seem like supraphysiological DHT has the potential to shift that equation in favor of hair loss.

 

[madman]

That makes it sound like a local phenomenon, likely for men who are especially predisposed to it. But if we were to put all the pieces of the puzzle together, it does seem like supraphysiological DHT has the potential to shift that equation in favor of hair loss.

The critical point here is the development of AGA is driven by increased local androgen metabolism, rather than systemic hormone levels and sensitivity AR/hair follicle in genetically prone individuals is key here not high/excessively high serum DHT levels.