Siddha is an ancient Indian traditional treatment system which evolved in South India, and is dated to the times of 3rd millennium BCEIndus Valley Civilization or earlier. According to ancient literature of Siddha, it is said that the system of this medicine originated from Hindu God Shiva who taught it to his consort Parvati. Parvati then passed it on to Nandi and Nandi taught about it to nine Devtas. Most Siddha medical practitioners are traditionally trained, usually in families and by gurus. When the guru is a martial arts teacher, he is also known as an ashan. Traditionally, it is taught that the siddhars laid the foundation for this system of medication. Siddhars were spiritual adepts who possessed the ashta siddhis. Nandhisar is considered the first siddha and the guru of all siddhars.
Concept of disease and cause
When the normal equilibrium of the three humors — Vaadham, Pittham and Kapam — is disturbed, disease is caused. The factors assumed to affect this equilibrium are environment, climatic conditions, diet, physical activities, and stress. Under normal conditions, the ratio between Vaadham, Pittham, and Kapam are 4:2:1, respectively. According to the Siddha medicine system, diet and lifestyle play a major role in health and in curing diseases. This concept of the Siddha medicine is termed as pathiyam and apathiyam, which is essentially a rule based system with a list of "do's and don'ts".
Herbalism
The herbal agents used by the siddhars could be classified into three groups: thavaram, thadhu and jangamam. The thadhu agents are further classified as: uppu, pashanam, uparasam, loham, rasam, and ghandhagam.
Practicing Siddha medicine and similar forms of rural alternative medicine in India was banned in the Travancore-Cochin Medical Practitioners' Act of 1953, then reinforced in 2018 by the Supreme Court of India which stated that "A number of unqualified, untrained quacks are posing a great risk to the entire society and playing with the lives of people." The Act requires that qualified medical practitioners be trained at a recognized institution, and be registered and displayed on a list of valid physician practitioners, as published annually in The Gazette of India. The Gazette list does not recognize practitioners of Siddha medicine because they are not trained, qualified or registered as valid physicians.
Criticism
Since 2014, the Supreme Court of India and Indian Medical Association have described Siddha medicine as quackery, and there is no governmental recognition of siddhars as legitimate physicians. The Indian Medical Association regards the Indian institutions that train people in Siddha medicine, the supposed degrees granted, and the graduates of those programs as "fake". Since 1953, the Indian national government has not recognized Siddha medicine or any alternative system of medicine as valid, and there is no proposal to integrate Siddha medicine into conventional medicine practiced in India. There may be as many as one million quack "doctors", including siddhars, practicing medicine in the rural regions of India, a condition not actively opposed by the Indian government out of concern for serving some health needs for the large rural population. The Indian Medical Association emphatically opposed this position in 2014. In 2018, licensed Indian physicians staged demonstrations and accused the government of sanctioning quackery by proposing to allow rural quacks to practice some aspects of clinical medicine without having complete medical training.