At the heart of “healthspan” vs. “lifespan” lies a paradox: seeking to live to an old age, while enjoying the benefits of youth (health-wise). Yet, ironically, for the first time in history, the human lifespan has declined by three years despite modern scientific and technological advancements. To help clarify this phenomenon, Gundry explains how this is truly a byproduct of how we have lived over the decades, and suggests that we focus more on our healthspan, not our lifespan. Further, he touches on and busts seven myths to provide sounder context to the topic of longevity, such as “saturated fat should not be demonized” and “milk does a body good,” to name a few.