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Charak, sometimes spelled Charaka, was one of the principal contributors to the ancient art and science of Ayurveda, a system of medicine and lifestyle developed in Ancient India. He is sometimes dated to c. 800 BC as he worked on older treatise by Purnvasu Atreya (c.1000 BC) and Agnivesha Agnivesa, of whose work, the Agnivesha Tantra, was the basis of his Charaka Samhita 
Charaka is also referred to as the Father of Medicine.
Acharya Charaka and the Ayurveda
The term Charaka is a label said to apply to "wandering scholars" or "wandering physicians". According to Charaka's translations, health and disease are not predetermined and life may be prolonged by human effort and attention to lifestyle. As per Indian heritage and science of Ayurvedic system, prevention of all types of diseases have a more prominent place than treatment, including restructuring of lifestyle to align with the course of nature and four seasons, which will guarantee complete wellness.
He seems to have been an early proponent of prevention is better than cure doctrine. The following statement is attributed to Acharya Charaka:
|“||A physician who fails to enter the body of a patient with the lamp of knowledge and understanding can never treat diseases. He should first study all the factors, including environment, which influence a patient's disease, and then prescribe treatment. It is more important to prevent the occurrence of disease than to seek a cure.||”|
These remarks may appear obvious today, though they were often not heeded to. Several other such remarks, which are held in reverence even today, were made by Charaka in his famous Ayurvedic treatise Charaka Samhita. Some of them pertain to the fields of physiology, etiology and embryology.
Charaka was the first physician to present the concept of digestion, metabolism and immunity. According to his translations of the Vedas, a body functions because it contains three dosha or principles, namely movement (vata), transformation (pitta) and lubrication and stability (kapha). The doshas are also sometimes called humors, namely, bile, phlegm and wind.)) These dosha are produced when dhatus (blood, flesh and marrow) act upon the food eaten. For the same quantity of food eaten, one body, however, produces dosha in an amount different from another body. That is why one body is different from another. For instance, it is more weighty, stronger, more energetic.
Further, he stressed, illness is caused when the balance among the three dosha in a human body is disturbed. To restore the balance he prescribed medicinal drugs. Although he was aware of germs in the body, he did not give them any importance.
Charaka knew the fundamentals of genetics. For instance, he knew the factors determining the sex of a child. A genetic defect in a child, like lameness or blindness, he said, was not due to any defect in the mother or the father, but in the ovum or sperm of the parents (an accepted fact today).
Charaka studied the anatomy of the human body and various organs. He gave 360 as the total number of bones, including teeth, present in the human body. He wrongly believed that the heart had one cavity, but he was right when he considered it to be a controlling centre. He claimed that the heart was connected to the entire body through 13 main channels. Apart from these channels, there were countless other ones of varying sizes which supplied not only nutrients to various tissues but also provided passage to waste products. He also claimed that any obstruction in the main channels led to a disease or deformity in the body.
Agnivesa, under the guidance of the ancient physician Atreya, had written an encyclopedic treatise in the 8th century B.C. However, it was only when Charaka revised this treatise that it gained popularity and came to be known as Charaka Samhita. For two millennia it remained a standard work on the subject and was translated into many foreign languages, including Arabic and Latin.
He is the author of Charak Samhita which has survived and has been handed down to us in the form of Bower Manuscript dated to around 4th century. However, the manuscript is believed to be an edition by Dṛḍhabala, the original work by Charaka is a few centuries older. Charaka Samhita is one of the two foundational text of Ayurveda, the other being Sushruta Samhita. Charaka Samhita contains 120 adhyayas (chapters), divided into 8 parts.
According to the Charaka tradition, there existed six schools of medicine, founded by the disciples of the sage Punarvasu Ātreya. Each of his disciples, Agnivesha, Bhela, Jatūkarna, Parāshara, Hārīta, and Kshārapāni, composed a Samhitā. Of these, the one composed by Agnivesha was considered the best. The Agnivesha Samhitā was later revised by Charaka and it came to be known as Charaka Samhitā. The Charaka Samhitā was revised by Dridhbala.
- Sutra Sthana
- Nidan Sthana
- Viman Sthana
- Sharir Sthana
- Indriya Sthana
- Chikitsa Sthana
- Kalpa Sthana
- Siddhi Sthana
There were 8 main chapters in this book. There had been 120 sub chapters of which they all in total had 12,000 shlokas and description of 2,000 medicines. There were cures for diseases related to almost every body part of human body and all medicines had natural eliments without ant chemicals to cure the diseases.
- Srikantha Arunachala, "Treatise on Ayurveda" Vijitha Yapa Publications, p. 3
- Asian Journal of Pharmaceutical and Clinical Research, Vol. 7, Issue 3, 2014, "Introduction": "The history of herbal medicine of India is very old, perhaps the oldest use of plants have been documented in ancient Hindu Scriptures like Rigveda (4500-1600BC), Charak Samhita (1000- 800BC), Sushrut Samhita (800–700 BC) and others. " http://innovareacademics.in/journals/index.php/ajpcr/article/download/1168/788
- Martin Levey, Early Arabic Pharmacology: An Introduction Based on Ancient and Medieval Sources, Brill Archive (1973), p. 10
- P. N. K. Bamzai, Culture and Political History of Kashmir - Volume 1, M D Publications (1994), p.268
- S.K. Sopory, Glimpses Of Kashmir, APH Publishing Corporation (2004), p. 62
- Krishan Lal Kalla, The Literary Heritage of Kashmir, Mittal Publications (1985), p.65
- Concept Of Genetics In Ayurveda
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