Food
What should humans eat? Funny you should ask, someone asked some real humans, we should probably listen.
Healing
Health and healing are innate. No experts need apply, no pharmaceuticals need to be supplied.
Farming
With nature, not against it, proportional to the nutritional needs of the people.
Culture
Paying attention to thoughts, beliefs, and words and creating a culture where health is the default from the ground up, from birth to death.