A new study reveals a concerning dual role for nicotinamide riboside (NR), a popular anti-aging supplement. Researchers found that while NR boosts cellular energy and repairs DNA in healthy cells, it can also fuel the growth and spread of cancer cells by providing them with the same energy and repair mechanisms. The compound, a form of vitamin B3, is converted in the body to NAD+, a crucial molecule for metabolism and DNA repair. The research suggests that individuals with undiagnosed or active cancers should be cautious about taking NR supplements, as they could inadvertently accelerate tumor progression. The findings highlight the complex relationship between aging interventions and cancer risk. Read the full article at https://www.sciencedaily.com/releases/2026/03/260302030657.htm