Effects of castration on dick size

For castration-related posts that just don’t seem to fit anywhere else.
Jon246
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Effects of castration on dick size

Post by Jon246 »

Hello everyone, quick question for you all and just checking what is normal.

Has anyone else experienced quite a significant reduction in the size of their dick since getting castrated? I was never huge but there is no doubt at all that I have reduced in size, both length ways and also volume. My dick also feels more dense if that makes sense. Has anyone else experienced this?
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Re: Effects of castration on dick size

Post by TheRagingEunuch »

This is probably irrelevant since I am a Congenital Eunuch, but I was also blessed with Micropenis. My partner who has a short right arm, calls it my "stub". She also calls her arm that, so I guess she and I have a little in common. ;) /b]
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Re: Effects of castration on dick size

Post by WheelyFixed »

There is an old joke about "use it or lose it" The penis is basically a set of sponges in tubes that are soft and squishy when limp, but fill with blood when one gets excited, causing an erection. The regular erections one gets even when not sexually active, i.e. morning wood, fun dreams, porn, etc. keep that spongy tissue stretched out to some degree, even when limp.

When you get castrated, especially if you aren't doing testosterone replacement, you will probably get erections less often, if at all. This lack of 'exercise' will allow those sponges to shrink to some degree... How much seems highly variable, and it may depend on how much you started with, i.e. are you a 'shower' or a 'grower'. However it seems from reports that everyone shrinks some, but the minimum is about what you had when you hit puberty.

I've never heard anyone talk about 'density' before, so not sure on that angle. I don't think mine feels much different than it did before, but never really measured it. Given that most of the shrinkage is from reduced elasticity in those tissues, it does make sense that it might feel more dense.

WheelyFixed
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Re: Effects of castration on dick size

Post by NaturalEunuch »

Mine shrank immediately. Of course, I checked as soon as I woke up from the surgery and was surprised to see foreskin covering a good portion of the head of my penis. As a circumcised person, I was shocked that there was that much shrinkage.
"In many ways, a eunuch is not a damaged human, but an improved one."
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Re: Effects of castration on dick size

Post by WheelyFixed »

I have to do significant 'fishing' to find mine and drag it out of hiding... Of course considering that I have to catheterize, I can't really blame it for trying to hide... I'm actually not sure I could get enough out to pee neatly when standing or sitting if I didn't have to cath.

If I was a TAB, I'd probably be inclined to consider going nullo for that reason, but the usual re-route exit point is even worse when in a chair and needing to cath. (I have a female friend who said the only time she ever had "penis envy" was when she landed in rehab and the nurse came in w/ a mirror to give her lessons...)

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Re: Effects of castration on dick size

Post by Sakebigoe »

Mine hasn't changed really at all since my castration, I'm on a decently high dose of TRT though so I still get regular erections. As wheely said, it's very much a use it or lose it kinda situation.
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Re: Effects of castration on dick size

Post by Bibiballs »

Jon246 wrote: Fri Oct 24, 2025 6:38 pm Hello everyone, quick question for you all and just checking what is normal.

Has anyone else experienced quite a significant reduction in the size of their dick since getting castrated? I was never huge but there is no doubt at all that I have reduced in size, both length ways and also volume. My dick also feels more dense if that makes sense. Has anyone else experienced this?
Are you still able to get erected ? And if so do you appreciate the feeling of a more dense dick ?
As I was starting to get impotent, my penis is absolutely not dense. It is like marshmallow.
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Re: Effects of castration on dick size

Post by Jon246 »

Many thanks everyone for confirming that my shrinkage is nothing unusual and yes back to similar to pre puberty levels
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Re: Effects of castration on dick size

Post by Swim1650 »

Sakebigoe wrote: Sun Oct 26, 2025 12:35 am Mine hasn't changed really at all since my castration, I'm on a decently high dose of TRT though so I still get regular erections. As wheely said, it's very much a use it or lose it kinda situation.
Yeah, so long as you supplement the testosterone no longer being produced by the testicles, I wouldn’t expect too drastic of a change. From what I can tell when you block/remove T you reopen report 10–20% reduction.

I’m seeking castration + penectomy w/nerve preservation and afterwards taking TRT to maintain a masculine physique.

Either before any surgery or after only having castration/orchiectomy, I would interested in find out it if I could reduce my T levels enough to stop erections but enough to maintain a masculine body. Without erections, the penis will atrophy. I’m fine with that.

My flaccid penis is quite small. I’m a healthy 5’11” 28 year old… It’s short enough that it often just points straight out. When flaccid I’m less than 1/4” longer the clinical definition of a micropenis. I don’t think it’s an impossibility for atrophy of the shaft to retract itself entirely leaving just the glans visible. If my penis can’t get hard and it’s just the glands poking out 3/4”, it won’t flop around and can hardly be seen as a functioning penis. It’s more of a decoration.

Realistically, I’ll probably end up with a penectomy at the same time as the orchiectomy. That way no one will be able to say my dick is small. :D

But I need to schedule an appt and get the ball rolling
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Re: Effects of castration on dick size

Post by WheelyFixed »

Shrinkage is very much a "Your Mileage May Vary" question. Some shrink a lot, some hardly at all... Hormones definitely play a part, but don't explain all of the variations.

In terms of adjusting T levels, it is certainly possible to do that after surgery, we even have that mentioned as an advantage. Unfortunately there don't seem to be any real options to effectively lower T levels a small amount without surgery. The various drugs all seem to totally block either production of T or it's receptors (or both) to do effective chemical castration....

Since that is usually what doctors want to achieve (i.e. w/ cancer patients) I don't know if there is even any research on partial reductions. You might try looking at Finasteride or Spiranolactone as those have on-label uses other than T-reduction, but have ED as a sided effect... Some have used them off-label to get chemical castration or feminization.

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Re: Effects of castration on dick size

Post by wanasoso2 »

To be more precise about Finasteride, it reduce the production of dihydrotestosterone (DHT) by inhibiting the enzyme that produce it. DHT if made of course from T and act as an antiandrogenic. DHT is mostly responsible for secondary sexual characteristics as body hair, volume of prostate, consequently volume of seminal fluids. On the other hand it reduce the fall of scalp hair which is nice to avoid baldness. This last goal can be achieve with 1mg a day while 5mg day is you to reduce problem of enlarge prostate. For myself the 1mg a day did a good job for hair loss, with less leg hair, with the ones remaining being much thinner. Seminal fluids are greatly reduce too, to two drops (being vasectomized too) but no ED after two years. But who care when there is no penetrative sex. :lol:
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Re: Effects of castration on dick size

Post by Castor »

WheelyFixed wrote: Thu Oct 30, 2025 4:03 am You might try looking at Finasteride or Spiranolactone as those have on-label uses other than T-reduction, but have ED as a sided effect...
I can only warn against Finasteride. For years, it was touted as a cure not only for hair loss and enlarged prostate, but also for preventing prostate cancer. However, there are several indications that the drug may prevent harmless cancer (which may not even be cancer at all), but may cause higher-grade cancer. All I'm saying is that the drug is controversial, at the very least, because it directly interferes with the testosterone-dihydrotestosterone regulatory cycle and has significant side effects.
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Re: Effects of castration on dick size

Post by WheelyFixed »

Thanks for letting us know about the controversial side of Finasteride Castor.

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Re: Effects of castration on dick size

Post by wanasoso2 »

It's a good comment made par Castor.
My urologist told me about that, as for my age the probability of prostate cancer is about 1%. With finasteride it can double or triple to 2 to 3% chance. Which is not high per say.
It's true also that there is many studies and some controversy about the consequences of using finasteride and here I found some relevant article for those who could find and interest in the subject.
I think the pdf of those article are accessible for everyone, no need to be link to a university or professional scientific career.

https://academic.oup.com/jnci/article-a ... ogin=false

https://www.nejm.org/doi/full/10.1056/NEJMoa030660

https://journals.lww.com/md-journal/ful ... __A.8.aspx

https://aacrjournals.org/cancerpreventi ... sk-of-High
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Re: Effects of castration on dick size

Post by WheelyFixed »

Thanks for those links wanasoso2. Interesting reads though possibly good insomnia treatments... My non-MD take on them seemed to be that it was somewhat of a mixed bag, that taking Finasteride seemed to reduce the overall risk of getting ANY prostate cancer. However if you did get PCa, it was more likely to be a serious case...

So definitely a trade off on the risks.

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Re: Effects of castration on dick size

Post by 1smoothguy »

Finasteride was originally developed to treat benign prostatic hyperplasia and marketed under the trade name of Proscar. BPH is a significant enough medical condition of restricting urinary flow that warranted any slight increase in cancer risk since the the treatment would be by a urologist who would be monitoring. One of the side effects of the Proscar treatment was decreased hair loss from male pattern baldness. After extensive clinical trials Proscar was rebranded at a lower dosage and marketed as Propecia. The original interest in this area started in the mid 1970's with clinical trials in the 80's and approval by FDA in the 90's. It has been around and in use for quite a while. Use for BPH, benefit far outweighs risk. For the treatment of male pattern baldness, does vanity outweigh even slight risk? As I develop a small bald spot I'm still weighing that one :)

Of more interest is what I learned from my urologist. Once I was in my 50's my yearly physical by PCP included the digital prostate exam as well as PSA blood test. When I moved to a new area 10 years ago I learned that primary care docs here only use PSA to gauge prostate health. If you want a physical check you must see a urologist, which I do. The urologist stated that PSA can miss some of the more aggressive forms of prostate cancer in it's initial development but that can be detected better with the digital exam. So as usual if you ask 3 doctors a question you get back 6 different opinions. :D
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Re: Effects of castration on dick size

Post by Dannie »

Since my surgery I have been on an estrogen and later a combined with a progesterone. Not really looking to transition, just be more myself. I found I have lower energy and some muscle loss so my gynecologist recommended I go on a very low dose of topical testosterone. I did but now I fill partially amd have some unwanted hair growth. It’s a trade off she told me…not much you can do…I I don’t want to fill but yet want more energy. Any one else have this experience. I have urgious to play, but no desire. Does that make sense? I love that feeling…it’s calming.
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Re: Effects of castration on dick size

Post by WheelyFixed »

I've been on Estrogen since a month after my first Lupron shot. Other than growing more breast than I like (but am OK with) no obvious feminizing, and the boobs don't show if I have a shirt on. However I have lost considerable muscle mass.

My T levels since that first shot have been 'non-detectable' which is what they say if below the minimum the test can pick up. I've been mildly concerned about this since it is less than what 'natural' eunuchs or cis-females have.

I was looking at Deca-Durobolin as it was described in the Eunuch Friends Wiki since it claimed to give a lot of the benefits of T in terms of bone health, muscles, etc. without pushing libido. However it appears that it is not available in the US according to my doc. Instead my TG doc recently suggested that I try doing very low dose T gel or injections, and see what that did for me. I'm currently fighting with the insurance to get it covered.

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Re: Effects of castration on dick size

Post by sftineun »

WheelyFixed wrote: Mon Mar 09, 2026 11:01 am my TG doc recently suggested that I try doing very low dose T gel or injections, and see what that did for me. I'm currently fighting with the insurance to get it covered.

WheelyFixed
I am currently taking T-gel and I am quite satisfied with the effects. The advantage is I can control dosage every day. The regular dosage is 2 pumps a day. But after talking to my endocrinologist, I experimented down to 1 pump a day, and after 6 months, cut down to the current dose of about 1/2 pump a day. At this low dose, I don't get much libido, no erections, my penis remains nice and small (at less than 50% of its original size. However, it seems adequate to maintain my bone health. If anything, my bone density seems to have improved a bit in the past couple of years.

My endocrinologist got insurance coverage for my T-gel because my T level without any TRT was very low, and bone density scan indicates that I have osteopenia. (Note that evidently there are T-gel and then there are androgel. Some is covered and some not. The endocrinologist had to work with insurance company to identify the one they are willing to cover. But eventually, I have gotten approval for T-gel and have been using it for about 8 years now.)
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Re: Effects of castration on dick size

Post by WheelyFixed »

The good news is that I've now been approved, and the T-gel is supposed to be delivered tomorrow. It's supposed to be the lowest strength (IIRC, 12.5mg / pump) and we are going to start w/ 1 pump every other day. I go back again in a few months to get a level check and talk about how it's working for me...

Glad to hear you are getting good results as that is a good sign for me...

Not sure exactly what convinced the insurance to approve it, but their denial said that I had failed to meet the FDA requirement of chronically low T levels... When I called them on the phone (on a Saturday) I asked the agent if they were aware that I had over three years of undetectable levels and wasn't that enough? I sent the Doc a message via the EHR portal about them denying it and filing the appeal on Sunday. I'm not sure how much record checking they did but I got a message back from the doc very early on Monday saying they'd approved it... I didn't mention that I was a eunuch, but it is in my medical record...

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Re: Effects of castration on dick size

Post by Dannie »

I love the eunuch calm post orchie that I get on just estrogen ( my T levels was down to 14) but am worried about muscle loss so my gynecologist had me doing 1 pump ever other day and it raised my T to over 200! I only get my blood checked every 3 months. I quickly stopped because …I was getting those undesired erections, inceased hair growth and slighly edgy. (The damn make aggression from T!). Got my T down to nothing again and now I am on about a 1/4 pump ever day….so far I feel fine….havent had my blood work checked …1 more month. This is a balancing act and many trade offs. But bottom line, I wish I had seen a urologist 30 years ago and gone down this path much sooner. I love the feeling
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Re: Effects of castration on dick size

Post by JustMe »

I was prescribed testogel, 50mg. / have been lowdosing my t since I was castrated - completely off T was not my cup of Thea, I had to endure being completely hormone free for 4 weeks and it was really hard to function.
Lowdosing T meant virtually no libido, nocturnal erections if they occurred, were weak and short lived.
Spontaneous erections during the day have been completely absent since my castration even when I was on full dose T for a couple of months afterwards,

As I haven’t discussed the adjustment of lowdosing T with my endocrinologist I have had to remain stealth and I always took full dose of testogel prior to bloodtest.

However latest bloodtest despite I took full dose testogel a couple of hours before having my blood drawn, my levels were only 9.7nmol for testosterone and free T 0.22nmol.
Castrated March 2023.
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Re: Effects of castration on dick size

Post by OneBallBoi »

I think the shrinkage is not because you are a Eunuch. But more because of the lack of T. I go to the Young Men's Christian Association (YMCA) here in America and all the older men have small penis. They are all small, I have concluded. Before my castration, I told my Urologist that I must have the smallest penis ever. And his reply was, "Mine is even smaller than yours. Don't feel bad." As a teenager in school, I used to be so ashamed because my penis was so small in the shower room. Penis small is the story of my whole life.
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Re: Effects of castration on dick size

Post by photoglenn »

My penis definitely has become very small, to the point where it seems to almost retract into an "innie".

With no balls, I can push it downward "into" my scrotum, although not actually into it, just visually into it, although it does come back out like a turtle bringing it's head out of it's shell.

In addition even with testosterone, I am not permanently impotent, even prescription ED medication does not help me get an erection.

Actually, no balls, no erections, makes me I guess the ultimate eunuch.

The only problem is that the testosterone does give me a libido, a craving for sexual relief, which is very difficult to obtain so I am quite sexually frustrated that way, but overall, no balls and being impotent is a much better way to live than when I had balls and got constant erections, which were on occasion an embarrassment.
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Re: Effects of castration on dick size

Post by Castor »

photoglenn wrote: Sun Apr 05, 2026 2:38 am In addition even with testosterone, I am not permanently impotent, even prescription ED medication does not help me get an erection.
Sorry, I don't understand the posting. On the one hand you say that you are not permanently impotent *even* with testosterone, on the other hand that you can't get an erection. If you lower your testosterone level, erections usually don't happen - you become impotent und your cock shrinks. However, if you increase your testosterone levels (and also take PDE-5 inhibitors such as Cialis), you should be more or less potent again, right?

-Castor
Last edited by Castor on Fri Apr 10, 2026 6:08 pm, edited 1 time in total.
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