Gelded (imported) wrote: Thu Aug 06, 2020 10:34 pm
It seems to be a hormonal issue so ...
It depends on with what other treatments the castration is done.
Removing only the testicles and using testosterone replacement, there should be almost no reduction in semen. Semen is made up of only 3 to 5% sperm. The rest is prostate and seminal fluid.
A prostatectomy removes far more than the prostate. The surgeon will remove the prostate, the seminal vessels, and the spermatic chords. Since 95 to 97% of semen is prostate fluid and seminal fluid and the 3 to 5% of semen that is sperm needs the spermatic chords to travel into the semen, there is nothing left to make semen. Even if the prostatectomy left enough nerves to clamp down the bladder muscles during orgasm, there would be no fluid to pump out during ejaculation.
After the prostatectomy, the pathologist will score the cancer. If the cancer is aggressive and requires androgen deprivation therapy, there are two choices - either chemical or physical castration.
If a man chooses physical castration after a prostatectomy, it won't be the cause of his dry orgasms. The lack of prostate, seminal vessels, and spermatic chords will be the cause of the dry orgasms.
Since most men think all of their semen is 100% sperm, it's easy to see how they would blame the lack of testicles on a dry orgasm.
Even if the cancer in the prostate is scored as nonaggressive and castration is not required, dry orgasms are going to happen because there are no seminal vessels nor prostate to make fluids for semen.
Not all prostate cancer is treated with radical prostatectomy. Sometimes radiation is used to kill the cancer. This can be done with beam radiation or with seeds. Both have the possibility of damaging the seminal vessels and leaving a man with a dry orgasm.
Lastly, medications designed to make it easier to pee can cause dry orgasms. Flomax and similar drugs are smooth muscle relaxers and are used to relax the prostate to allow urine to flow thru the part of the urethra that passes through the prostate. These muscle relaxers can cause the muscles that clamp off the neck of the bladder to fail to do so during orgasm and result in a retrograde ejaculation.
The urethra is very sensitive because it contains a great many nerves. As semen passes through the urethra, it feels good. Most men equate ejaculation and orgasm. In fact, they are two separate events that happen at about the same time. Many men into "edging" (bringing themselves just to the point of orgasm and then stopping") can experience a full flow of ejaculation without orgasm. As well, a small percentage of men are multiple orgasmic and can experience orgasm without ejaculation.
Some medications - such as SSRI antidepressants - can have the side effect of preventing ejaculation. Some men love this "side effect" to the point that doctors will prescribe an SSRI to help premature ejaculation in men who need it. Men on an SSRI will either learn to orgasm without ejaculaition, live without orgasm or tell their doctor they can't tolerate the side effect.
You are correct, semen and ejaculation are a fun experience and living without it can make orgasms less pleasurable.