A new analysis in JAMA Dermatology  reports that nicotinamide, a form of vitamin B3, was associated with a meaningful reduction in incident skin cancers among U.S. veterans with a prior history of the disease. The findings point to an inexpensive, orally administered chemopreventive option that could help clinicians manage an especially high‑risk population. The study drew on data from more than 12,000 veterans followed over 25 years who had previously received nicotinamide and had at least...

Photo by curretett on Freeimages.com Young adults who use tanning beds may be aging their skin cells at a molecular level much faster than their chronological age suggests, according to a new study from the University of California, San Francisco (UCSF) and Northwestern University. The research, published December 12 in Science Advances , reports that tanning bed users in their 30s and 40s harbour more mutations in their skin cells than nonusers who were in their 70s or 80s. “We found that...

Illustration courtesy Juliet M. Pullar et al. J Invest Dermatol 2025 Oct. 29:S0022-202X(25)03509-2 A new study from the University of Otago in Christchurch, New Zealand, has found that dietary vitamin C intake directly enhances collagen production and skin renewal, offering clinical confirmation that nutrition may play a central role in skin physiology. Published in the Journal of Investigative Dermatology , the investigation established a strong, dose-responsive relationship between plasma...