What is NAD?
Sirtuins: aging regulators
Sirtuins are enzymes that require NAD+ to function and are involved in five hallmarks of aging. When there are healthy amounts of sirtuins and NAD+ cofactors, they inhibit the hallmarks: epigenetic alterations, mitochondrial dysfunction, deregegulated nutrient sensing, genomic instability, and cellular senescence.
NAD deficiency accelerates the hallmarks of aging
When the body does not have enough NAD, all of the above roles are harmed. Without enough NAD, genomic instability, epigenetic alterations, deregulated nutrient sensing, and poor energy metabolism hurt wellness and promote aging. NAD declines with age because it is consumed by enzymes, mainly CD38.
Hallmarks of aging affected by NAD
Each of your cells shares the same DNA. Epigenetics is what decides which pieces of DNA to use to make proteins and is the reason we have different cell types. With age, our cells become confused and lose some of their ability to function properly within their cell types.