Ayurveda, the science of life, is the most ancient medical doctrine of human civilization. This has evolved gradually from its classical treatise based knowledge to the present-day textbooks and from Gurukul education to a college-based education system. The classical Ayurveda texts do not make a clearer distinction across the disciplines except for a few. Though some of the proponents have been credited with expertise of some of the branches, all of them have described various theories, concepts, and principles across many disciplines. For instance, Acharya Sushrut is called as the father of Indian surgery, but his classical doctrine Sushruta Samhita also describes other branches of Ayurveda, such as medicine and pathology, and is the same with Acharya Charak, who is credited as the father of Indian medicine.
However, certain basic principles described in Ayurveda have remained intact and are still the same as today’s medical science. This could be equally applicable to the realm of epidemiology which is a branch of medicine that deals with “the study of the distribution and determinants of health-related states or events in specified populations, and the application of this study to control of health problems. Populations, as with individuals, have unique patterns of disease. Populations’ disease patterns derive from differences in the type of individuals they comprise, in the mode of interaction of individuals, and in the environment in which the population lives. The science of epidemiology, which straddles biology, clinical medicine, social sciences, and ecology, seeks to describe, understand, and utilize these patterns to improve health.