Earth represents solid structures of the body. Vitality represents fire. Ether or space represents the human soul. Deviation from state of balance, leads to accumulation of toxins resulting in diseases. According to Charaksamhita, whenever our five senses lose coordination, this results in imbalance in other body functions.
Nature helps in restoration of the balance.
The modern lifestyles prevent man from taking care of even minimal health needs, creating greater dependency on drug stores. However, good health is a condition built over the years by our vital processes through self control and will power. Diseases are caused due to violation of rules of diet, exercises, sleep, relaxation and drinking water etc. Disease is a self purifying effort of nature. If we suppress the condition with drugs etc., we are only laying foundation for chronic diseases.