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Back to Sexual health. Like most sexual activities, anal sex carries the risk of passing on sexually transmitted infections STIs. Penetrative anal sex has a higher risk of spreading STIs than many other types of sexual activity. This is because the lining of the anus is thin and can be easily damaged, which makes it more vulnerable to infection. Some infections caused by bacteria or viruses can be passed on through oral-anal sex, such as hepatitis A or E. Use condoms to help protect you against STIs when you have penetrative anal sex. Use a water-based lubricant, which is available from pharmacies.

Once upon a time, anal sex was a huge no-no for nice girls. Not only was it taboo, it was also considered kind of — well, kind of gross. Letting someone put his penis fingers, tongue in your butt?

But it can also raise a bunch of intimate questions you might feel too embarrassed to ask, well, anyone. Thankfully, asking doctors intimate questions is kind of our forte here at SELF. Using lube is a must during anal play, Joseph Frankhouse , M. Anal penetration without adequate lubrication can cause the tissue in your anus to tear.