Remember, one testicle can provide enough testosterone for you to get an erection and ejaculate. This is also enough to produce adequate sperm for fertilization. As long as you're in good health and don't have any underlying conditions that could impact your fertility, you should be able to have children.
Men who have had both testicles removed are no longer able to produce sperm, so they cannot have biological children. Sometimes, men are able to bank their sperm before surgery. The sperm cells are then frozen and saved for in vitro fertilization later. Body image concerns are common after orchiectomy.
One testicle not descending into the scrotum during normal embryonic or fetal development (3–4% of 'normal' live births), also known as undescended testis or cryptorchidism.
Those with one normal testicle can still be fertile, although the quality of their sperm is reduced.
Having one testicle removed won't affect your ability to get an erection. The remaining testicle usually makes more testosterone (the male sex hormone) and sperm. This makes up for the removed testicle. But you might feel less like having sex, at least for a while, after your treatment.
Some men may have a "buried testicle." Known as cryptochidism, one or both testicles do not descend into the scrotum. This condition is generally, but not always, noticed at birth. Often an infant boy's testicle that has not descended will usually move into the scrotum on its own during the first year of life.
Removing a testicle and fertility
You have surgery to remove the testicle. This doesn't usually affect your ability to have children. But sometimes your remaining testicle might not work so well. This could reduce your fertility.
No difference in pubertal development among boys with cryptorchidism was observed.
A unilateral cryptorchid has one testicle retained and bulls are generally fertile. A bilateral cryptorchid has both testicles retained and bulls are infertile, but still maintain a male phenotype.
Our data indicated that the regrowth of transplanted testis was a real regeneration process, as the testicular tissue has the abilities to (1) grow in a compensatory manner, (2) reform testicular structures from the dissociated cells, and (3) regain spermatogenesis and endocrine functions.
Traditionally, it has been assumed that larger testes produce more sperm per ejaculate, giving the male an advantage in numerical sperm competition [6].
It is theoretically possible for a dog to have more than two testicles. This is termed polyorchidism and is a congenital disease an animal can be born with. However, it is exceedingly rare, with only around 200 cases reported in humans, and only two seen in dogs.
The standard answer is 12–16 hours if you are dry fasting. However, practically speaking, this depends from body to body. Some experts opine it takes about 72 hours with water fasting for autophagy to kick in.
The sperms produced by the remaining testicle are still able to produce viable ones that can unite with an ovum and fertilise. Each testicle produces millions of sperms and just one sperm is needed to fertilise an egg.
Losing one testicle usually has no effect on a man's ability to get an erection and have sex. But if both testicles are removed, sperm cannot be made and a man becomes infertile. Also, without testicles, a man cannot make enough testosterone, which can decrease sex drive and affect his ability to have erections.
The American Urological Association report that 3–4 percent of full-term male newborns and 21 percent of those born prematurely have an undescended testicle. Usually, only one testicle does not descend. Both are undescended in 10 percent of cases.
The exact cause of an undescended testicle isn't known. A combination of genetics, maternal health and other environmental factors might disrupt the hormones, physical changes and nerve activity that influence the development of the testicles.
Erectile Function after Bilateral Orchiectomy
The removal of both testes may be followed by decreased libido, lower semen levels, low testosterone and at least one sexual disorder. The ability to achieve and maintain an erection may not always be guaranteed where both testicles are removed.
It's absolutely possible for a dog to enjoy playing with a ball so much that it's hard to stop or to satisfy those instincts any other way. Brian Gallardo with Awoken K9 Training notes that fixation can be one of the first signs of obsession, though it's not necessarily concerning.
I quickly googled it and found it is called “Paraphimosis” This is when the penis comes completely out and the dog cannot retract it back into their body. The two lumps that looked like testicles are in fact the “bulbus glandis” These are on either side at the base of the penis.
Removing the testicles can also protect against some later-life health concerns, such as testicular cancer and prostate enlargement, as well as hormone-related tumors of the perineum. Neutering may also be associated with an increased risk of some musculoskeletal disorders and cancers, when done before a given age.
Bottom line: Men generally see a decrease in fertility beginning at 35, and the decline progresses from there. The age men are most fertile may be between 30 and 35, but we haven't yet determined a specific window of peak fertility.