Long-Term Administration of Nicotinamide Mononucleotide Mitigates Age-Associated Physiological Decline in Mice
Key Finding
Long-term NMN supplementation in mice mitigated age-related physiological decline across multiple organ systems by boosting NAD+ levels.
Plain-English Summary
This landmark animal study investigated the long-term effects of nicotinamide mononucleotide (NMN) supplementation in aging mice. Mice received NMN in their drinking water over 12 months, starting at middle age.
NMN administration effectively mitigated age-associated physiological decline across multiple organ systems. Treated mice showed improved energy metabolism, better insulin sensitivity, improved lipid profiles, and enhanced physical activity compared to untreated controls. NMN also suppressed age-related weight gain and improved eye function.
The study demonstrated that NMN can boost NAD+ biosynthesis in a tissue-specific manner. NAD+ is a critical coenzyme for mitochondrial function, DNA repair, and sirtuin activation. The findings provide strong preclinical evidence that maintaining NAD+ levels through NMN supplementation may counteract many aspects of aging, laying the groundwork for human clinical trials of NMN for age-related cognitive and physical decline.