The Ancestral Health Society goal is perfectly in step with the functional medicine approach to reversing the epidemic of chronic disease by identifying and correcting the root causes of disease whilst taking note of the lessons of our evolutionary biology as stated by the AHS:
"goal is to examine current health challenges through the context of our ancestral heritage. In modern science, evolution is the default perspective for inquiry, yet in modern healthcare, evolution is almost nowhere to be seen. The Ancestral Health Symposium is dedicated to providing a forum for sharing scientific theories about how diet, lifestyle, and environment can shape human health."
The various AHS symposium talks available on their website are fascinating & worst listing too for different perspectives on solving our health challenges.

"It’s true healthcare. Functional Medicine is a distinct medical model—separate and, as you’ll come to learn, vastly different from the conventional approach—one that promotes wellness and helps both prevent and treat chronic disease, the biggest health problem we face today. Although its concepts are not new, in this way, its approach is revolutionary. Functional Medicine is the future of medicine."
by Chris Kresser

He goes on to provide a great description in his blog post in July this year & well worth a read for a clear explanation.

Dr Rangan Chatterjee exposed the masses to the functional medicine approach to solving complex chronic medical conditions. Although the terms functional medicine were never used Dr Chatterjee has undergone training with the Institute of Functional Medicine and applied those principles throughout the TV series.