Why NAD is Important for Anti-Aging

NAD⁺ isn’t a direct “miracle anti-aging drug”; it’s a core coenzyme in cells. As we age, NAD⁺ naturally declines in the body, which is closely linked to cellular aging.

Four Major Anti-Aging Functions of NAD⁺ in Cells：
1. Maintaining mitochondrial energy production and reducing age-related energy decline. NAD⁺ is an essential coenzyme for mitochondrial aerobic metabolism, responsible for energy conversion. As we get older, NAD⁺ decreases, mitochondrial function declines, cells produce less energy, and free radicals increase, making cells more prone to damage and aging. Adequate NAD⁺ helps mitochondria function normally and reduces oxidative damage.
2. Activating longevity proteins called Sirtuins. Sirtuins need NAD⁺ to activate. They repair DNA, regulate inflammation, stabilize chromosomes, and remove aging signals. Without enough NAD⁺, Sirtuin activity drops, DNA damage accumulates, and aging speeds up.
3. Supporting DNA repair enzyme PARP. Cells experience DNA damage daily, and PARP relies on NAD⁺ to fix it. As we age and NAD⁺ drops, DNA repair weakens, mutations pile up, which is a key cause of cell aging and disease.
4. Reducing chronic inflammation and improving the condition of aging cells. Aging cells continuously release inflammatory factors (inflammatory aging). Lower NAD⁺ levels amplify this inflammation; boosting NAD⁺ helps reduce chronic low-level inflammation, improves metabolism, and slows cells from entering a "senescence" state.

Why NAD⁺ Decreases with Age
1. Natural decline in synthesis ability;
2. Continuous DNA damage, with PARP consuming lots of NAD⁺;
3. Increase of CD38 enzyme, speeding up NAD⁺ breakdown;
4. Staying up late, high-sugar diet, long sitting periods, excessive alcohol, and chronic stress further deplete NAD⁺. Declining NAD⁺ levels → worse DNA repair, mitochondrial damage, increased inflammation → accelerated cell aging, creating a vicious cycle.