Journal Club with Dr. Peter Attia | Effects of Light & Dark on Mental Health & Treatments for Cancer

Metabolism

Artificial sweeteners have a complex relationship with metabolism and body weight. Peter Attia explains that non-nutritive sweeteners can alter the gut biome, impacting metabolism, especially in susceptible individuals 1. Andrew Huberman adds that the perception of sweetness can drive hunger, making people crave food even without caloric intake 1. This phenomenon can lead to increased appetite and potentially weight gain.

The perception of sweetness in the mouth, even if there's no calories there, can stimulate appetite.

--- Andrew Huberman

Peter also discusses the difficulty in determining causality, as obesity might influence the choice of diet drinks rather than the other way around 2.

   

Gut Health

The impact of artificial sweeteners on gut health is another area of concern. Peter mentions that while some sweeteners are not linked to cancer, they can disrupt brain and gut chemistry, affecting metabolism 3. He advises caution and limited use of these sweeteners.

These things can really be mucking around with both your brain chemistry and your gut chemistry.

--- Peter Attia

Andrew highlights the importance of gut health for overall well-being, noting that probiotics and prebiotics are essential for brain function and immune system support 4.