NAD+ (nicotinamide adenine dinucleotide) is an essential coenzyme present in every living cell, playing a fundamental role in energy production and overall cellular function. It is crucial for converting nutrients into usable energy by driving redox reactions within the mitochondria, acting as an electron carrier in processes such as glycolysis and the Krebs cycle. In addition to its role in energy metabolism, NAD+ is involved in important cellular activities including DNA repair, regulation of gene expression, and maintaining metabolic balance. Since NAD+ levels tend to decrease with age, strategies aimed at increasing its availability have drawn interest for their potential to support healthy aging, boost energy, and strengthen cellular resilience.

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NAD+ functions as a key substrate for enzymes known as sirtuins and PARPs, which are involved in regulating stress responses, controlling inflammation, and preserving genomic stability. By supporting these pathways, NAD+ helps facilitate DNA repair, enhance mitochondrial performance, and maintain proper cellular communication. This makes it not only vital for energy metabolism but also important for longevity and protection against age-related decline. Its role in sustaining cellular balance and optimal function has made NAD+ a major focus in research related to anti-aging, neuroprotection, and metabolic health.