SIRT1 depends on a molecule called NAD (Nicotinamide adenine dinucleotide), and NAD, in turn, depends on the substance called NMN.

SIRT1合成取决一种叫NAD（辅酶）分子，而NAD合成则取决一种叫NMN。

The levels of NAD tend to go down across the lifespan.

NAD 水平在整个生命周中往往会下降。

NAD is present in all our cells from birth until death.

NAD 存在从出生到死亡所有细胞中。

NR and NMN are considered by many to be precursors to NAD.

许多人认为 NR 和 NMN 是 NAD 前体。

We've talked about NR and NMN and NAD and the NAD pathway.

已经讨论了 NR 和 NMN 以及 NAD 和 NAD 途径。

So they will infuse you directly with NAD into the vein.

因此他会直接将 NAD 注入您静脉中。

Those NAD infusions are pretty darn uncomfortable.

那些 NAD 注射非常不舒服。

I take NR and NMN in an effort to increase NAD.

服用 NR 和 NMN 来努力增加 NAD。