NMN is the abbreviation of nicotinamide mononucleotide, which is a food component made from vitamin B3, which plays a role in restoring various organs and tissues of the body. The expected effects of NMN include physical strength, thinking power, metabolism up, and skin effect. The first step to understanding NMN is the relationship between NMN and NAD (nicotinamide adenine dinucleotide). Nad is a coenzyme that is essential for intracellular energy production and has a function to activate the sirtuin gene (longevity gene) which plays an important role in aging control. NMN is a nad precursor, and it is converted into nad in the body when ingested. Although the decrease in nad by aging is one of the causes of aging, the effect of retarding the aging can be expected by taking NMN continuously in the supplement and increasing NAD.