In 2007, Peter Belenke showed that NR increased sirtu activity and it gave yeast a longer lifespan. So why is that important? That model? But what you're saying is that model has then incorrectly been used to study longevity? Yeah, it's actually mind boggling. I spent a lot of my professional life working with yeast. The enzyme that we have in our body that makes insulin and pro and cephaline is pretty much the same human enzyme as a yeast enzyme.

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