'It also contains proteins and amino acids,' Bennett said. As Nelson Bennett, MD, urologist at Northwestern Memorial, previously told Men's Health, semen is 80% water. Other times, it sneaks up on you you have nowhere to spit it out, and down the hatch it goes.īut what happens when you swallow semen, anyway-besides an ensuing struggle to figure out what it tastes like? Does it have any nutrients? And what about the STI risk of swallowing semen? Sometimes, when mouths and penises do stuff together, people end up ingesting semen-it's simply a part of life.
