What is NAD

Nicotinamide adenine dinucleotide (abbreviated as NAD), also known as pyridine diphosphate (abbreviated as DPN), or co-dehydrogenase I or coenzyme I. There are two states of oxidized (NAD+) and reduced (NADH) in mammals. The oxidized (NAD+) has a maximum ultraviolet absorption spectrum at 260nm. Through various deaminases, it accepts a hydrogen atom and One electron, becomes the reduced form (NADH), which has a maximum absorption at 340nm.

Nicotinamide adenine dinucleotide participates in various physiological activities such as cellular material metabolism, energy synthesis, and cellular DNA repair, and plays an important role in the body's immune ability. In a healthy state, the concentration of nicotinamide adenine dinucleotide in the human body is stable to maintain the normal functions of various cells. The concentration of nicotinamide adenine dinucleotide in the body determines the process and degree of cell aging, and a decrease in the concentration will accelerate the process of cell aging.

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