Your Metabolism Ages Too
Metabolism converts food into the energy you need for life. As you age, your metabolism slows and becomes less efficient—impacting how quickly and effectively your cells function.
This happens for two main reasons: First, levels of a coenzyme called NAD+, which is central to hundreds of metabolic processes and cellular energy production, decline. Second, enzymes inside our mitochondria—the powerhouses of our cells—like SIRT3 that depend on NAD+ to function slow down.

