Public Health and Medicine

A peer‑reviewed study led by Northwestern University and UCSF, published in Science Advances and reported Dec. 14, 2025, finds indoor tanning is associated with nearly triple the melanoma risk versus non‑users, with risk climbing to more than eightfold after 200+ sessions. Genomic sequencing showed widespread UV‑induced mutations across seemingly normal skin in predominantly younger female tanners, underscoring public‑health concerns as U.S. surveys show rising Gen Z interest in tanning.