Nicotinamide riboside (NR) supplements are promoted for their potential anti-aging benefits because of their role in boosting NAD+ levels in the body. NAD+ is a coenzyme crucial for cellular energy production, DNA repair, and other vital cellular processes. As we age, NAD+ levels decline, which is associated with various age-related health concerns. Preliminary research, primarily in animal models, suggests that NR can raise NAD+ levels and may have positive effects on lifespan and healthspan. However, more extensive human studies are needed to confirm its efficacy and determine optimal dosages.