Siddha

Siddha medicine is a traditional medicine originating in South India. It is one of the oldest systems of medicine in India. In rural India, siddhars have learned methods traditionally through master-disciple relationships to become local "healers".

Introduction
The food we consume is the fuel for the human body which is processed by the three humours, and when this equilibrium isn't maintained by the body, there is illness.
Siddha branch of medicine has its uniqueness and tradition rooted in Tamil or Dravidian philosophy and culture. It uses metals and minerals in the making of medicines. The materia medica of Siddha medicine is peppered with references of drugs made with the use of sulphur, mica, mercury and other metals, a practice believed to be in use since the 6th century AD.
Principles of Siddha
The Siddha system of medicine sees the individual as a microcosm of the universe
5 natural elements: earth, fire, air, water and space
3 humours: vatham (movement), pitham (digestion or metabolism) and kapham.
The basic concept of Siddha remains a system that puts equal emphasis on the mind, body and spirit. It works towards restoring this equilibrium after a person has fallen ill. The practice of Siddha is guided by a series of do's and don'ts, also known as pathiam and apathiam.
Other practitioners of Siddha medicine are also believed to have gained their knowledge of alchemy in China or through Chinese experts on medicine and alchemy.
Elements of siddha
According to Siddha, seven different elements of the human body—in different permutations and combinations—make up the physiological and psychological functioning of an individual:

Saram: Plasma that is behind the growth of a human body and its development and nourishment
Cheneer: Blood, that flows to different parts of the body to nourish, purify and rejuvenate them
Ooun: Muscles, that form the shape of the human body
Kollzuppu: Fatty tissue, which lubricates the joints and protects them from wear
Enbu: Bone, which gives the human body its structure and posture that enables its movement
Moolai: Nerves, which give the body its strength
Sukila: Semen, which is responsible for reproduction

Views of siddha
Siddha practitioners focus on curing any dysfunction in the organs which may be causing the disease. According to Siddha medicine, the route to a healthy soul is through a healthy body.