New York—based doctor Evan Goldstein knows plenty about buttholes—as one of the world's leading anal surgeons, he's spent decades fine-tuning his knowledge. Most of us already know that STI checkups and sexual barriers such as condoms are key to maintaining anal health, but Goldstein believes there's a tool in this arsenal of preventive measures that many of us aren't using: anal Pap smears.

These screening tests are less well known than their cervical smear test counterparts, but they're just as vital when it comes to detecting early signs of cancer. "I strongly believe anyone who engages in anal play should undergo not only anal Pap smears, but also full evaluations, both inside and out, with a high