Perineum sunning or butthole sunning is a fad wellness practice that involves exposing the perineum (area between the genitals and anus) to sunlight. Adherents claim various unproven health benefits such as improved libido, circulation, sleep, and longevity. There is no scientific evidence that this behavior promotes any of the alleged benefits. The practice of exposing a sensitive area of skin to sunlight also increases the risk of skin cancers such as melanoma, squamous cell carcinoma, and basal-cell carcinoma. Safer options such as relaxation, meditation, and mindfulness can also achieve the same benefits.
- Beth Daley (23 December 2020). "There's no magic way to boost your energy. But 'perineum sunning' isn't the answer". The Conversation.
- EJ Dickson (27 November 2019). "Sorry, Anus Tanning Is Not Really a Thing". Rolling Stone.
- Marci Robin (7 December 2019). "Dermatologists Are Warning People Not to Try Perineum Sunning". Allure.
- Leah Groth (21 February 2020). "So, Perineum Sunning is a Thing Now—Here's Why Doctors Definitely Don't Want You to Try It". Health.com.