As per Ayurveda, the body organism depends upon the balance of 3 main elements in our body.

The qualitative and quantitative measure of these elements determines health and disease. If there is a desired balance of these elements in the body, the body functions in a normal way with proper functioning of digestive system, nervous system, excretory system etc. Any imbalance caused in these elements, indicate improper functioning and hence disease as per the nature of imbalance.