The American Academy of Pediatrics (AAP) wants to ban teens from using UV tanning beds, Time reports.

In 2009, the International Agency for Research on Cancer, the cancer division of the World Health Organization, classified tanning beds as “carcinogenic to humans” — the agency’s highest cancer-risk category, which also includes radon gas and plutonium. The American Academy of Dermatology and the American Medical Association already also warn against using the beds.

The AAP is now joining these other agencies in its stance because of the particular risk of skin cancer in adolescent girls, who make up a large proportion of tanning salons’ customer base. According to the AAP policy statement, there are 50,000 licensed tanning salons currently operating in the U.S., which receive 1 million visitors per day, 70% of whom are girls and women.