Expert Answers Factual Answers to Your Sexual Health Questions

anonymous on September 13, 2011

Is it dangerous for me to swallow another man’s ejaculate after giving him a blow job?

I’m a 25-year-old man and ⎼ for the last month ⎼ I’ve been sneaking away with a male co-worker so I can perform oral sex on him. He says it gives him relief because he gets turned on by all the provocatively dressed women we work with. Last week, I confided in a female co-worker and she said we should stop. She said that if I give a guy a blow job and swallow, eventually the protein from his sperm will mix with mine and cause an infection in my balls. Is that true?

answered by
Ruthann M. Cunningham, MD on September 13, 2011

Thanks for your question...it sounds like you’re in a confusing situation, but I’ll do what I can to help you understand your risks.
 
First, it sounds like your female co-worker was pulling your leg...or she was misinformed about testicle infections. Although you can get infections in your testicles, there aren’t any known testicular infections caused from sperm mixing in your body.
 
However, you may be at risk for other types of infections...like STDs. For one, it sounds like you’re having pretty risky sex. Performing oral sex without protection is one way to contract a slew of STDs. To name a few, you’re at risk for chlamydia, gonorrhea, syphilis, HPV and herpes. If your male co-worker is positive for these or other sexually transmitted infections, they can infect your mouth or throat. And if you have any sores in your mouth it is possible to catch HIV or hepatitis B from oral sex.
 
Plus, if you happen to have an STD, you’re also at risk of passing it on to a partner through oral sex. To learn more about the most common STD risk factors, check out our Expert Guide to STD Basics.
 
What’s the best way to protect yourself from STDs when giving a man oral sex? When you give a man a blow job, he should always wear a latex condom to reduce the risk of STDs for you and for him.  Some brands of condoms even make flavored varieties. And if you perform oral sex on a woman, you can use a dental dam to protect her and you from possibly spreading an infection.
 
In the meantime, I encourage you to get tested for some of the most common STDs. Getting tested is actually relatively easy and not as scary as it sounds. If you think you might have been exposed to one or more STDs, getting tested is the only way to know for sure if you have an STD or not. Knowing your STD status is also the first step in getting the right treatment, if needed.
 
Remember, all STDs are treatable and some are curable...but early detection is key to avoiding potentially long-term health problems down the road.
 
Thanks for your question and for trusting us with your story. I hope you’ll get tested for STDs soon and regularly. And remember...practice safer sex to improve your odds of staying healthy.
 
 
Related info:

Ruthann M. Cunningham, MD

Dr. Cunningham is a member of the Analyte Physicans Group. She's also a member of the American College of Emergency Physicians, practicing at both Northwestern Lake Forest Hospital in Illinois and at Wheaton Franciscan All Saints Medical Center in Wisconsin. An ER physician since 2000, she regularly treats patients with STDs. Dr. Cunningham was educated at Wayne State University School of Medicine and completed her Emergency Medicine residency at Cook County Hospital in Chicago, IL.

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