All the Sex Things That Could Cause Cancer

Because nothing and no one is safe.

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In a world where one day coffee is said to cause cancer and the next to protect against it, sex is normally considered one of the few pleasurable acts we have left where we know where we stand. It might give you herpes, sure, but cancer, not so much.

Surprise! We were wrong about everything and sex will totally give you cancer, and in many different interesting and innovative ways! Here are just three of the sex-related things that science says could indeed possibly be carcinogenic.

The Slippery Slope of Lube
The majority of personal lubricants sold in drug stores contain controversial toxins in the form of parabens. While parabens are known hormone disruptors — they mimic natural estrogens — the jury is still out on whether these toxins really cause cancer: Some research indicates that high levels of parabens can lead to cells mutating into cancer, but currently, the U.S. and Canada consider parabens safe. It’s certainly true that the levels found in these products are very low — much lower than the highest allowable levels — so, y’know, keep doing your thing.

Dildo Danger
In 2005, the Danish Environmental Protection Agency tested 16 popular sex toys to see what they were made of, and to identify those chemicals’ effects on the human body. Among the cheap materials — mainly plasticizers and solvents — that are widely used to produce sex toys, there are some, such as Dimethylformamide and Toluene, that have been linked to testicular cancer when the materials are absorbed by the skin or through an open cut. Furthermore, Phthalates, a group of chemicals used to make plastics softer and more flexible, are “reasonably anticipated to be a human carcinogen,” according to the researchers. So choose your bedroom weapons wisely.

Your Own Semen Wants to Kill You — and Your Partner
A few weeks ago, we wrote about how there are 27 viruses that could be in your semen, some of which can be sexually transmitted and carcinogenic. But more worrisome is a 2006 study, in which researchers from the Medical Research Council’s Human Reproductive Sciences Unit at the University of Edinburgh discovered that the high concentration of prostaglandin — a hormone of sorts — in semen makes diseases of the female reproductive organs worse (including cervical and uterine cancer).

While prostaglandin is naturally produced by the cells that line the female reproductive organs, the concentration of prostaglandin in seminal fluid is 1,000 times higher than that normally found in those cells. “Sexually active women who are at risk of cervical or uterine cancer should encourage their partners to wear a condom to prevent increased exposure to the prostaglandins that might make their condition worse,” lead researcher Henry Jabbour wrote in 2006.