Yes, semen is mostly water, protein and sugar and is completely harmless. You can't catch anything from your own semen. As to whether you like the taste or not, that is a matter of personal preference.
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Yes
No, you will not die from eating sperm. Swallowing semen is perfectly safe, as long as he doesn't have and STD.
is it safe to drink sperm
is it safe to drink sperm
Infectious diseases can be transmitted for semen so swallowing semen is not consistent with "safe sex". Other than that there is nothing particularly good or bad about it.
Yes it is safe. I do not advise doing that though. It is safe and you can do so if you wish. You cannot give yourself any infection from taking your own semen. Many males masturbate and swallow their own semen. Recent studies have found that consuming human semen reduces depression. You can find an article about that in the related links below.
If both men are healthy with no diseases, it's safe.
It is alright at any age.
They stay until one of the thousands of sperm cells find the ovule (female sex cell) and then there's a possibility you could get pregnant but the other sperms die. The first sperm to get into the ovule is safe but the other sperms last for at least one day then they die.
Semen generally contains sperm cells, and it is the sperm cells in the semen that cause pregnancy. However, if the man has had a successful vasectomy or had his testes removed, his semen will not contain sperm cells.
That should be "... your semen does not come out". (Semen is the liquid that the tiny sperm cells swim around in.) You could have retrograde ejaculation, which means that the semen and sperm go backwards toward or into the urinary bladder instead of coming out. This is much more likely if it turns out that you are taking certain drugs, like certain families of anti-depressants. Or (and much more likely) your body simply may have not gone through puberty, yet.
Years.
Swallowing semen from a disease-free male during sex is generally safe. There is nothing unhealthy about swallowing unless the person has an STD.