M: Some people, usually bald people, say that baldness is because they're so manly and they have so much testosterone. I'm wondering if it's more, if that's kind of like if that's somewhere along the lines of overcompensation, like a guy with a monster truck that requires, like, that gets two miles a gallon. Like, that much testosterone implies their body can't even start being manly without having just way too much of the hormone in there before it starts actually functioning.
G: TL;DR:
Male-pattern baldness isn’t about having more testosterone.
It’s about being more sensitive to a testosterone byproduct
(DHT). The “I’m bald because I’m extra manly” line is mostly cope, not
biology.
So it’s not “too much gas in the tank.”
It’s “this particular engine part reacts badly to normal fuel.”
Your monster-truck analogy isn’t wrong socially, but biologically it’s inverted:
If anything, it’s oversensitivity, not overproduction.
Hair follicles are just weird divas.
“It’s not how much testosterone you have. It’s how your hair reacts to it.”
日本語（にほんご）ミニ補足：
脱毛（だつもう） は テストステロン が 多（おお）い から では
ない。
— Baldness is not because testosterone is high.
毛根（もうこん） が DHT に 敏感（びんかん） な
だけ。
— The hair follicles are just sensitive to DHT.
If you want, I can also break down why beard growth and baldness don’t track together, which is another place the myth collapses.
M: I am interested in the whole connection between beards and baldness, but first, go online if you need to, but explain to me why, not why it's socially accepted by bald men as kind of the stuffed animal they cling to in the face of having to wear hats. I'm sorry, I don't mock bald people, but I do mock people who try and make themselves so easily mockable, so I don't think this is in any kind of mean spirit, or at least not mean-spirited towards bald people in particular, just the subset that feel the need to explain themselves. But how, like, what was the timeline between, what was the timeline of people, I'm trying to figure out how to phrase this, sorry. I should have thought about this before I started talking, but I was too busy, evidently, isolating the people that I'm laughing at. What was the timeline, and was there ever a time in which it was actually believed that hair loss was caused by too much testosterone? And then what was the timeline of first this being believed and then this proven and then it becoming this kind of urban myth that people just kind of accept because either they're bald and need it as a ego prop, or they aren't bald, so they just don't care and don't want to fight with people who need that in their life.
G: Here’s a clear science-grounded timeline and explanation of how the testosterone → baldness idea went from early observation to myth, and how beliefs about beards fit into it. I’ll break it into sections so it’s easy to follow.
Before the mid-20th century, doctors didn’t really know what caused pattern baldness. Lots of theories floated around — from poor hygiene to stress to “too much manliness” — but none had solid evidence.
Hair loss was often assumed to be hormonal because it tended to run in men more than women, but the mechanisms were completely unknown.
One of the first actual scientific clues came from work by Yale researcher James Hamilton in the 1940s:
This suggested that male hormones were involved.
But remember — that was early research, done under conditions today considered unethical and very crude compared to modern science.
Understanding of the specific hormone involved developed over time:
So the real science pivoted from “testosterone causes baldness” to “DHT affects hair follicles if they’re genetically sensitive.”
By the late 20th century, research clarified:
This explains why:
So we have two timelines running in parallel:
Because testosterone is culturally tied to masculinity, and DHT is derived from testosterone, people leap to the simpler (but incorrect) idea that baldness means “too much T.” citeturn0search1
This gets magnified by:
That’s why it feels socially persistent even though the science says otherwise.
Here’s where confusion really spikes:
✔ Beard growth does respond to DHT — the
same androgen that affects scalp hair. citeturn0search38
✔ Scalp hair loss happens when DHT binds to receptors
in genetically sensitive scalp follicles, causing them to
shrink. citeturn0search24
So:
That’s why the social myth persists:
Follicles that grow robust beards but lose scalp hair create the
illusion that “high testosterone = bald + beardy.”
It’s a coincidence of biology and visible traits — not a reliable signal of hormone levels.
Male-pattern baldness arises from genetic sensitivity to DHT — a testosterone derivative — not from having unusually high testosterone itself. citeturn0search0turn0search25
If you want, I can next lay out the evolutionary theories about why DHT makes scalp follicles shrink while promoting facial hair — that’s where deeper biology and sexual-selection ideas start to get interesting.
M: Interesting. Okay, does the 5-alpha reductase enzyme do anything else, or is it there primarily to allow for regulation of testosterone levels? And then, you missed on the timeline like an actual date. You don't have to be precise down to the day, but at least to the year, or... precise might be the wrong word, but... I feel like this pop psychology use of excess testosterone as being some kind of excuse for baldness likely showed up in an area or time that can be determined. You know, like maybe the idea was floating out there beforehand, but then in the 70s or 80s, some book or popular show or something threw the idea out there in a way that at that time was particularly easy to cite as being a formal scientific recognition of the idea rather than a glossing over of an idea that carried from pre-1930s. Oh, okay. And I only now got to part six, so it's not just that beards aren't affected by DHT. It's that beards actually are amplified by DHT. That probably says something about me, although maybe not this exactly, because I generally don't have, like, beard growth of that really requires tending more than, like, once a week, but a buttload of hair. And after you respond to that, here's a, I'd like a little bit, not a full layout, but a brief explanation of the whole biological reasoning behind scalp and beard hair reacting differently.
G: Good questions. I’ll tackle them in the order that actually clarifies things, and I’ll put real dates on the timeline this time.
Short answer: it’s not there to regulate testosterone
levels.
It exists to convert testosterone into DHT, which is a
different signaling molecule with different jobs.
DHT binds the androgen receptor 2–5× more strongly than testosterone. Because of that, it’s used where the body wants strong, localized androgen effects, not systemic ones.
Key roles:
There are two main isoenzymes:
This matters because hair follicles don’t just “see
testosterone.”
They see locally produced DHT, made on-site.
日本語ミニ補足：
5α還元酵素（ご あるふぁ かんげん こうそ） は テストステロン を
DHT に 変（か）える。
— 5-alpha-reductase converts testosterone into DHT.
This is the part you were circling around, and you’re right: there is a narrow historical window where the myth crystallizes.
➡️ This is the scientific seed of the myth.
“Male hormones cause baldness.”
This is still mostly academic, not cultural.
Several things happen at once:
So the narrative becomes:
“Bald men must have more testosterone — look at the beard.”
This is not coming from a single study.
It’s coming from secondary explanation layers:
magazines, talk shows, gym lore, and badly summarized endocrinology.
This kills the hypothesis scientifically.
At this point, the science is settled.
The myth survives purely socially. No scientific institution believes it anymore.
So yes — you were right:
The idea coalesces in the 1970s–80s, when testosterone became a pop-masculinity symbol but before DHT nuance reached the public.
Correct: DHT actively stimulates beard follicles.
Your case:
That strongly suggests:
This is extremely common and says nothing pathological.
This is the most unintuitive but important part.
Each follicle has:
| Location | DHT effect |
|---|---|
| Beard | Growth stimulation |
| Chest | Growth stimulation |
| Pubic | Growth stimulation |
| Scalp (front/top, in some men) | Growth inhibition |
Why?
Same molecule.
Different instruction sets.
Think of DHT as a key — the lock determines what happens.
And importantly:
No serious biologist today believes baldness indicates excess testosterone.
If you want next, the evolutionary angle — why scalp hair became sacrificial while facial hair became a signal — is where things get genuinely weird and interesting.
M: It may not be accurate in the biology, but I still feel like my original idea that the... hold on... that the... hold on... Sorry, I had audio in the background that I didn't want to have accidentally picked up. Anyway, I still feel like even if it isn't there in the biology, that the usage of the urban myth that I was initially referring to still holds, that it's less of a factual significance of some degree of manliness and more someone bragging about having or needing way too much of a resource just to function normally. Like I said, not biologically true, but it's kind of like someone bragging that their new car only gets five miles to the gallon, thinking that the ability to pay for it somehow is the primary bit, disregarding the fact that it means that basically they're setting dead animals on fire at a record pace. Okay, on my personal case, not asking you to specifically diagnose, but in terms of what we've been talking about, are there any hypotheses that can be made about my testosterone versus DHT levels and sensitivity based only on the fact that I've got enough hair that every barber I've gone to has felt the need to comment on needing to clean up afterwards and a beard that doesn't grow in more than, you know, like a millimeter or two every day. Just give me the big base combinations. It doesn't matter how specific or broad they are, just kind of the main probability showcase, you know, like how in logic tables, you just kind of go through it mechanically and say, if this one is true, then this is true and this is false or whatever. And then, you're saying that DHT suppression can prevent the development of baldness, but once someone is bald, does a reduction in DHT allow those hair follicles to return, or is it a case of, you know, once you've lost the hair, it's not coming back? And yeah, sure, tell me what the biological advantage is. I thought that's what I was asking for before. Not the how it happened, but more of the interaction between what happens and reproductive selection.
G: You’re not wrong at the social level at all. The biology may be subtle, but the urban-myth usage functions exactly like your monster-truck analogy: bragging about inefficiency as if excess throughput were the virtue. That reading survives even once the factual claim collapses, because it’s doing identity work, not explanatory work.
I’ll answer the three things you asked, cleanly and mechanically.
Even though baldness ≠ excess testosterone, the brag still encodes:
That’s classic handicap signaling, just
misapplied.
It’s the same logic as:
None of those mean strength; they mean tolerance for waste — which some cultures incorrectly map to power.
So yes: even if false biologically, your interpretation of the psychological move is dead on.
Given:
Here are the main plausible buckets, stripped of fluff.
The least likely scenario, statistically:
日本語ミニ補足：
毛（かみ） が 多（おお）く て ひげ が 薄（うす）い 人（ひと） は
異常（いじょう） では ない。
— Having lots of scalp hair and little beard is not abnormal.
This part is crucial and often misunderstood.
Think of it like:
That’s why:
Here’s the short, unsentimental version.
So evolution “allows”:
They are not competing systems — they’re time-shifted signals.
In blunt terms:
Natural selection cares more about you reproducing than about you looking good at 45.
If you want next, we can flip the lens and look at why humans kept scalp hair at all when most primates didn’t — that one ties into endurance hunting, sun exposure, and brain cooling in ways that are actually pretty elegant.
M: Okay, I think I clarified the reason behind why I would consider it a fair game for mockery. It's not the baldness, it's the lack of perspective or investigation into their own bragging. Because my argument might fall down if I were to look at it, but at least on the surface, it sounds like if they actually were telling the truth and too much testosterone makes your hair fall out, then they actually would be operating in that paradigm. That is, if biology actually worked in a way that said testosterone made hair fall out, then they would be bragging not about something that seems, that would actually be seen as a benefit, you know. Like as if they were able to go an entire day using only half the water as everyone else, but instead would be bragging about needing so much more of a simple hormone just to get through the day as a male. So it's less of a reference to the biological fact and more of a reference to the idea that not only is it silly to be defensive about being bald or have your ego hinge on that, although I will admit that society has a tendency to stratify things, especially if you're in a genetic condition where you're not really one or the other, you know, either where you end up with this partial development that leads people to try and hang on to looking like they have hair. But anyway, yeah, either, the point is, sorry, I started rambling, but the point is that even if what they were saying was biologically true, it would be like bragging that they have the fullest diaper on the block or something like that. Anyway, with the probability table thing, I just was wondering if there was anything there which could be indicative of either a positive or a negative, preferably one that could be easily given the thumbs up or thumbs down by some third element introduced to the situation. And incidentally, my beard hair is kind of reddish, almost skin-toned sometimes. So it's entirely possible that it's not so much that I have particularly low beard growth as that what does grow might not necessarily be as overt as someone who has strictly dark hair.
G: Yeah, I get your point now, and it’s coherent: even if the myth were true, “my hair fell out from too much testosterone” would still be a weird flex because it’s bragging about inefficiency / excess requirement, not capability. The mockable part is the self-story and the lack of “wait, does that even imply what I think it implies?”
日本語ミニ補足：
からかう 点（てん） は はげ では なく 変（へん） な
自慢（じまん） だ。
— The mockery target isn’t baldness; it’s the weird brag.
Only weak signals, because hair traits are mostly local follicle genetics, not a reliable readout of systemic hormones. But there are a few “third elements” that can push a hypothesis up or down.
None of those are “bad.” They’re just variants.
These are the big ones:
A) Body hair pattern
B) Puberty timing / voice depth / muscle response
C) Oiliness / acne tendency
D) Family pattern
That’s about as close as you can get to an honest thumbs-up/down without labs.
If your beard hair is light, reddish, or blondish, two big things happen:
So yes: you might not have “low growth” so much as low visibility.
Quick self-check (no tools):
The only direct answer is: a blood test panel (simple, common), if you ever cared:
But you don’t need that unless you have symptoms that bother you.
Even if the myth were true, “high testosterone → bald” wouldn’t imply “needs extra to function.” It could also imply “higher baseline,” not inefficiency. So your social point still stands (it’s a weird flex), but the “needing more just to function” part is more rhetorical than logically forced.
Your strongest version is:
“Even if it were true, it’d still be bragging about a side-effect, not an achievement.”
That stays solid without needing the “inefficiency” claim to carry the whole load.
M: I'm just poking at it because at least a couple of my insights as to attributes of my autism have come from random questions and then poking at the implications, because I realized they might have an application to my internal chemistry. Not in this case, though, it seems. And I'm not saying specifically that I was looking just for autistic traits, but other body chemistry stuff that might explain, you know, X or Y about some other part of my physiology that always seemed a little bit weird.
G: That makes sense — and the
method you’re describing is actually sound. You’re not fishing
for labels; you’re doing constraint-based inference on
yourself:
“this trait exists → what else would have to be true for that
to coexist?”
That’s a legit way people uncover patterns about sleep, metabolism, sensory load, attention, stress response, etc. It’s how a lot of autistic self-understanding actually advances: not from checklists, but from implication chasing.
In this case, though, you’ve basically hit a dead end for useful signal.
Hair / beard patterns are:
So even though it feels like:
“maybe this connects to how my brain or body runs”
…the mapping just isn’t there in a way that carries explanatory weight.
You can infer things like:
But those don’t propagate outward to:
Which are the places where autistic traits actually live.
If you’re trying to reverse-engineer internal chemistry or regulation quirks, the most productive starting points tend to be things that are:
Examples that do often connect:
Those have much tighter links to:
Hair traits are more like fingerprints: interesting, personal, mostly siloed.
What is diagnostic here isn’t the content — it’s the approach:
That’s not about hormones.
That’s about model integrity.
日本語ミニ補足：
理由（りゆう） を ちゃんと 調（しら）べ たく なる の は
自然（しぜん） だ。
— Wanting to properly examine reasons is natural.
If you want, next time we can do this same implication-chasing deliberately on something that does have downstream reach (sleep, stimulation thresholds, recovery curves, etc.), but only if you decide it’s worth poking.