I've gotten interested lately in the world of Ray Peat. His big thing is energizing the metabolism, healthy thyroid, etc. The idea is to maintain the state that a child is in to prolong life and be healthy. Maximize energy rather than limit it.

Below is an example of a random insight:

> His article Cholesterol in Context states that aging “seems to be a state of cholesterol starvation.” In other words, the ability to make cholesterol diminishes as we age.

https://www.womensinternational.com/blog/aging-is-cholestero...

It's tough to synthesize his thought though. Whoever does and sells a popular level book of it will make a lot of money.