The human body is an ecosystem, like a tree or a fish pond. It can rectify (heal) itself, if we provide it with the right conditions, such as: Sun, air, water, minerals, peace, adequate exercise, rest etc. The body is the vehicle which we as beings use to experience being.
Our society's developments include medicinal and technologies which have enabled our human race to nearly double our life expectancy in the past 100 years. The discovery of antibiotics has saved a lot of lives, but there are tendencies to overuse the antibiotic and other medical interventions. Hence the increase in the dependency on the health system, instead of encouraging individuals to take more control of their own health.
Focus on wellness or illness has guided us towards different outcomes. It is time to shift the focus towards wellness, as focus on illness has not really dealt with the trouble, and may create more problems.