Wholistic health is a very complicated (and perhaps a very simple) equation.
It is comprised of many factors, including
mental: What we think and how we think greatly affect our mental health.
physical: Our bodies need good food, proper excercise, rest, sleep....
In ancient times I assume that many people did not understand why people would get sick. They did not understand about germs, virus, food poisoning, and a host of other facters. Because of their ignorance they might attribute sickness to evil spirits or a curse or who knows what else.
In recent years we, as a generation, have learned many things about being healthy. We need proper food and clean food preparation, exercise, clean water and clean air, a healthy environment, housing, clothes,
The power of a suggestion