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28 years
So there is no scientific proof that antibodies might be created by immune system to attack semen when swallowed considering it as a strange body and thus causing infertility later on?
Jul 15, 2014

Dr. Rania Mousa General Medicine
Swallowing semen does NOT cause sperm allergy or infertility. Semen is about 97 percent water. It passes through the digestive tract like water does. Sperm account for about 2 percent of semen. Sperm cells are very delicate and fragile. They are all killed by stomach acids.

If someone who swallows semen has a cut in the mouth and the sperm have some contact with blood, the risk of sperm antibodies or allergy is vanishingly tiny. I wouldn’t worry about it. The only thing to worry about is AIDS if the semen contains HIV.
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Dr. Nemer Charafeddine Obstetrics & Gynecology
so why semen don't cause antibodies during vaginal intercourse ?!
as said my colleague, the issue to worry about is STDs...
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