Peter Attia

Longevity has two components. The first is how long you live, your chronological lifespan, but the second and equally important part is how well you live—the quality of your years. This is called healthspan

Fast death waits for no one.

Continuing to ignore healthspan, as we’ve been doing, not only condemns people to a sick and miserable older age but is guaranteed to bankrupt us eventually.

Nearly all the money flows to treatment rather than prevention—and when I say “prevention,” I mean prevention of human suffering.

Aging is characterized by a progressive loss of physiological integrity, leading to impaired function and increased vulnerability to death,”

Lifespan deals with death, which is binary: you’re alive, and then you’re dead. It’s final.

sometimes long before, most people suffer through a period of decline that, I would argue, is like dying in slow motion.

The first vector of deterioration is cognitive decline.

Not everyone who dies in their eighties or nineties passes through the valleys of cognitive, physical, or emotional destruction on the way there.

As we will see in later chapters, cognitive, physical, and even emotional deterioration can all be slowed and even reversed in some cases with the application of the proper tactics.