Skin cancer affects one in five Americans, with nonmelanoma types like basal and squamous cell carcinoma making up most cases. Niacinamide, a form of vitamin B3, is found to offer a strong preventive effect A recent study published in JAMA Dermatology associated niacinamide use with a 14% lower overall risk of developing additional nonmelanoma skin cancers, with the greatest benefit seen after the first cancer diagnosis Earlier research showed that taking 500 milligrams of niacinamide twice daily reduced new nonmelanoma skin cancers by 23% and precancerous lesions by up to 15% Niacinamide protects your skin by restoring NAD+ for DNA repair, reducing inflammation, supporting immune defenses, and strengthening the barrier that maintains moisture and resilience against environmental stress For long-term use, smaller daily doses of 50 milligrams three times per day are safe and sustainable. Combining niacinamide with sensible sun exposure habits and good nutrition strengthens skin defense naturally
