Dr. Peter Attia: Supplements for Longevity & Their Efficacy

Sirtuins

The discussion on sirtuins highlights their potential role in longevity, particularly in relation to mitochondrial function and DNA repair. Peter Attia explains that while sirtuins and caloric restriction have been linked, they operate through parallel pathways rather than the same one. He emphasizes that overexpression of sirtuins and caloric restriction independently extend lifespan, suggesting that these are additive effects rather than synergistic 1.

They're parallel pathways for reasons that honestly escape me. Andrew, there are still people who maintain that the benefit of sirtuin overexpression is through the caloric restriction pathway and vice versa.

--- Peter Attia

Andrew Huberman adds that understanding these pathways can help in exploring how sirtuins might be activated to promote longevity 1.

   

Caloric Restriction

The myth surrounding caloric restriction's role in longevity is scrutinized, with Peter Attia pointing out that while caloric restriction can reduce chronic disease risk, its impact on lifespan is less clear. He notes that severe caloric restriction might lower risks of diseases like cardiovascular disease and Alzheimer's but could also lead to other health issues such as immune system compromise and frailty 2.

I think there's very good reason to believe that if an individual constitutively consumed 25% fewer calories than they were meant to eat, their risk of cardiovascular disease, cancer, Alzheimer's disease would go down.

--- Peter Attia

Andrew Huberman and Peter discuss that the evidence for caloric restriction extending lifespan is not definitive, and the benefits might not translate to overall mortality reduction 2.