Health3 min(s) read
Published 12:05 08 May 2026 GMT
Alarming simulation shows full process of what happens when semen enters your body
A simulation video has revealed exactly what happens if someone were to swallow semen after performing oral sex.
No, we're not joking.
There seems to be a simulation for everything nowadays, thanks to technological advances, especially AI.
So now, a simulation posted to TikTok has gone viral after showing viewers exactly what happens to semen as it passes through the human body.
The video has been uploaded to the social media platform by user Dr. Boogie, which reveals how the body processes semen after it enters through the mouth.
You may think that the skinless being at the start of the video is drinking milk, but that is meant to be the depiction of semen.
The post is captioned: "When semen enters your body, this is what happens..."
What does the simulation show?
After the figure swallows the semen, it can be seen running down their throat, with the white liquid scattered and little shapes on show, representing sperm.
According to Healthline, sperm make up approximately "one-to-five-percent of semen," while something called "seminal plasma fluid" makes up the rest of the bodily substance.
This is made up of "mostly water", as the video narrates: "When semen is swallowed, it travels down the oesophagus just like any other swallowed fluid, reaching the stomach quickly."
Once it gets to this stage, acids in the stomach, such as pepsin, work to break down proteins and deactivate the sperm cells.
So contrary to the rumors you may have heard as a teenager, you cannot get pregnant from fellatio - a relief to adolescents up and down the nation.
How long does semen stay in your body?
While a small amount may stick around a bit longer in the stomach, the majority moves quite quickly and leads to "rapid but uneventful gastric emptying."
This then enters the small intestine, where digestion goes on as normal, as more enzymes are added in, which are responsible for "absorbing any small amount of nutrients".
This is only a small amount, as a mouthful of sperm essentially contains non-significant amounts.
While a small amount "may be absorbed into the bloodstream", unfortunately, it does not give the individual any nutritional benefits, as may have been believed when you were younger.
Basically, don't swap your protein shake out just yet.
Are there any risks?
Healthline explains that "you would likely have to consume gallons of semen to see any dietary health benefit".
They go on, explaining that "for the most part," semen is "safe" to ingest, but in "very rare circumstances," some might discover that they're allergic.
Semen doesn't take up much room in the stomach - it is soon digested and fully out of your body, eliminated as waste.
They also conclude the video by warning that you could be at risk of contracting an STI by swallowing semen, so it's important that you have an honest and open conversation with your partner.













