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Ayurveda (Sanskrit Āyurveda आयुर्वेद, "life-knowledge"; English pronunciation //) or Ayurvedic medicine is a system of traditional medicine native to the Indian subcontinent and a form of alternative medicine. The oldest known ayurvedic texts are the Suśrutha Saṃhitā and the Charaka Saṃhitā. These Classical Sanskrit texts are among the foundational and formally compiled works of ayurveda.
By the medieval period, ayurvedic practitioners developed a number of medicinal preparations and surgical procedures for the treatment of various ailments. Practices that are derived from Ayurvedic medicine are regarded as part of complementary and alternative medicine, and along with Siddha Medicine and Traditional Chinese medicine, forms the basis for systems medicine.
Concerns have been raised about Ayurvedic products; US studies showed that up to 20% of Ayurvedic U.S. and Indian-manufactured patent medicines sold via internet contained toxic levels of heavy metals such as lead, mercury and arsenic. Other concerns include the use of medication containing toxic compounds and the lack of quality control in Ayurvedic facilities.
There are two ways in which to approach Ayurvedic principles and terminology: one may either focus on the historical foundation (as evidenced in the oldest ayurvedic texts, going back to the early centuries of the Common Era) or, alternatively, a description may take an ethnographic approach and focus on the forms of traditional medicine prevalent across India today.
Much like the medicine of classical antiquity, Ayurveda has historically taken the approach of enumerating bodily substances in the framework of the five classical elements (Sanskrit [maha]panchabhuta, viz. earth, water, fire, air and aether. Moreover, Ayurveda names seven basic tissues (dhatu). They are plasma (rasa), blood (rakta), muscles (maṃsa), fat (meda), bone (asthi), marrow (majja), and semen (shukra).
Ayurveda states that a balance of the three elemental substances, the Doshas, equals health, while imbalance equals disease. There are three doshas: Vata, Pitta and Kapha. One Ayurvedic theory states that each human possesses a unique combination of these doshas which define this person's temperament and characteristics. Each person has a natural state, or natural combination of these three elements, and should seek balance by modulating their behavior or environment. In this way they can increase or decrease the doshas they lack or have an abundance of respectively. Another view present in the ancient literature states that dosha equality is identical to health, and that persons with imbalance of dosha are proportionately unhealthy, because they are not in their natural state of balance. Prakriti is one of the most important concepts in Ayurveda.
In Ayurvedic theory, there are 20 qualities or characteristics (guṇas), which are inherent in all substances. They can be arranged in ten pairs of antonyms: heavy/light, cold/hot, unctuous/dry, dull/sharp, stable/mobile, soft/hard, non-slimy/slimy, smooth/coarse, minute/gross, viscous/liquid.
Ensuring the proper functions of channels (srotas) that transport fluids is one part of Ayurvedic treatment, because a lack of healthy channels is thought to cause diseases. Practitioners treat patients with massages using oils and Swedana (fomentation) to open up these channels.
Hinduism and Buddhism have had an influence on the development of many of ayurveda's central ideas. Balance is emphasised; suppressing natural urges is considered unhealthy and claimed to lead to illness; to suppress sneezing, for example, may give rise to shoulder pain. However, people are also cautioned to stay within the limits of reasonable balance and measure when following nature's urges. For example, emphasis is placed on moderation of food intake, sleep, and sexual intercourse.
Ayurvedic doctors regard physical and mental existence as well as personality as a unit, each element having the capacity to influence the others. One of the fundamental aspects of Ayurvedic medicine is to take this holistic approach into account during diagnosis and therapy.
Ayurvedic practitioners approach diagnosis by using the five senses. Hearing is used to observe the condition of breathing and speech. The study of the lethal points or marman marma is of special importance.
While two of the eight branches of classical Ayurveda deal with surgery (Śalya-cikitsā, Śālākya-tantra), contemporary Ayurvedic theory tends to emphasise that building a healthy metabolic system, attaining good digestion and proper excretion lead to vitality. Ayurveda also focuses on exercise, yoga, and meditation. To maintain health, a Sattvic diet can be prescribed to the patient.
Concepts of Dinacharya are followed in Ayurveda; dinacharya stresses the importance of natural cycles (waking, sleeping, working, meditation etc.) for healthy living. Hygiene, too, is a central practice of ayurvedic medicine. Hygienic living involves regular bathing, cleansing of teeth, skin care, and eye washing.
Ayurveda stresses the use of plant-based medicines and treatments. Hundreds of plant-based medicines are employed, including cardamom and cinnamon. Some animal products may also be used, for example milk, bones, and gallstones. In addition, fats are used both for consumption and for external use. Minerals, including sulphur, arsenic, lead, copper sulfate and gold are also consumed as prescribed. This practice of adding minerals to herbal medicine is known as rasa shastra.
In some cases, alcohol was used as a narcotic for patients undergoing operation. The advent of Islam introduced opium as a narcotic. Both oil and tar were used to stop bleeding. Traumatic bleeding was said to be stopped by four different methods: ligation of the blood vessel; cauterisation by heat; using different herbal or animal preparations locally which could facilitate clotting; and different medical preparations which could constrict the bleeding or oozing vessels. Various oils could be used in a number of ways, including regular consumption as a part of food, anointing, smearing, head massage, prescribed application to affected areas[page needed], and Oil pulling. Also, liquids may be poured on the patient's forehead, a technique which is called Shirodhara.
According to some experts, the practice of panchakarma (Devanāgarī: पंचकर्म)) is a therapeutic way of eliminating toxic elements from the body. Panchakarma includes Vamana, Virechana, Basti, Nasya and Raktamokshana. Panchakarma is preceded by Poorva karma (Preparatory Step)and is followed by Paschat karma and Peyadi karma.
Ayurveda is a discipline of the upaveda or "auxiliary knowledge". It is treated as a supplement or appendix of the Vedas themselves, usually either the Rigveda or the Atharvaveda. The samhita of the Atharvaveda itself contains 114 hymns or incantations for the magical cure of diseases. Scholars have traced the origins of Ayurveda back to 5,000 BCE, originating as an oral tradition. Later, as medical texts, Ayurveda evolved from the Vedas. There are various legendary accounts of the "origin of ayurveda", e.g., that the science was received by Dhanvantari (or Divodasa) from Brahma. Tradition also holds that a lost text written by the sage Agnivesh, a student of the sage Bharadwaja, influenced the writings of ayurveda.
There are three principal early texts on Ayurveda, all dating to the early centuries of the Common Era. These are the Charaka Samhita, the Sushruta Samhita and the medical portions of the Bower Manuscript (also known as the Bheda Samhita). The relative chronology of these texts is not entirely clear. The Charaka Samhita is often cited as primary; although it survived only as a recension dating to the 4th or 5th century, it may be based on an original written between 100 BCE and 100 CE, in which case it would predate the other two texts. The Sushruta Samhita was written in the 3rd or 4th century. The Bower Manuscript is of particular interest because here the manuscript itself is ancient, dated to the early 6th century. The earliest documented mention of the name Sushruta is found in the Bower Manuscript. The medical portions of the Bower Manuscript constitutes a collection of recipes which are connected to numerous ancient authorities, and may be based on an older medical tradition practised during the Maurya period, antedating both the Charaka and the Sushruta Samhitas.
The Bower Manuscript is also of special interest to historians due to the presence of Indian medicine and its concepts in Central Asian Buddhism. A. F. R. Hoernle in his 1897 edition identified the scribe of the medical portions of the manuscript as a native of India, using a northern variant of the Gupta script, who had migrated and become a Buddhist monk in a monastery in Kucha. The Chinese pilgrim Fa Hsien (c. 337–422 AD) wrote about the health care system of the Gupta empire (320–550) and described the institutional approach of Indian medicine, also visible in the works of Charaka, who mentions a clinic and how it should be equipped.
Other early texts, sometimes mentioned alongside the Sushruta, Chakaka and Bheda texts, are the Kasyapa and the Harita samhitas, presumably dating to the later Gupta period (ca. 6th century). Ayurvedic authors of the 7th or 8th century include Vagbhata and Madhava.
Underwood & Rhodes (2008) hold that this early phase of traditional Indian medicine identified "fever (takman), cough, consumption, diarrhea, dropsy, abscesses, seizures, tumours, and skin diseases (including leprosy)". Treatment of complex ailments, including angina pectoris, diabetes, hypertension, and stones, also ensued during this period. Plastic surgery, couching (a form of cataract surgery), puncturing to release fluids in the abdomen, extraction of foreign elements, treatment of anal fistulas, treating fractures, amputations, cesarean sections, and stitching of wounds were known. The use of herbs and surgical instruments became widespread.
The medical works of both Sushruta and Charaka were also translated into the Arabic language during the 8th century. The 9th-century Persian physician Rhazes was familiar with the text. The Arabic works derived from the Gupta-era Indian texts eventually also reached a European audience by the end of the medieval period.
British physicians travelled to India to see rhinoplasty being performed using native methods; reports on Indian rhinoplasty were published in the Gentleman's Magazine in 1794. Instruments described in the Sushruta Samhita were further modified in the Western World. Joseph Constantine Carpue spent 20 years in India studying local plastic surgery methods and was able to perform the first major surgery in the western world, the "Indian" method of nose reconstruction, in 1815. He published an article about his research and experience.
In 1970, the Indian Medical Central Council Act which aimed to standardise qualifications for ayurveda practitioners and provide accredited institutions for its study and research was passed by the Parliament of India. In India, over 100 colleges offer degrees in traditional ayurvedic medicine. The Indian government supports research and teaching in ayurveda through many channels at both the national and state levels, and helps institutionalise traditional medicine so that it can be studied in major towns and cities. The state-sponsored Central Council for Research in Ayurvedic Sciences (CCRAS) has been set up in order to do extensive research on the subject. To fight biopiracy and unethical patents, the Government of India, in 2001, set up the Traditional Knowledge Digital Library as repository of 1200 formulations of various systems of Indian medicine, such as ayurveda, unani and siddha. The library also possesses 50 traditional ayurveda books in a digitised form, made available online.
The Central Council of Indian Medicine (CCIM) a statutory body established in 1971, under Department of Ayurveda, Yoga and Naturopathy, Unani, Siddha and Homoeopathy (AYUSH), Ministry of Health and Family Welfare, Government of India, monitors higher education in ayurveda. Many clinics in urban and rural areas are run by professionals who qualify from these institutes.
The Sri Lankan tradition of Ayurveda is very similar to the Indian tradition. Practitioners of Ayurveda in Sri Lanka refer to texts on the subject written in Sanskrit, which are common to both countries. However, they do differ in some aspects, particularly in the herbs used.
The Sri Lankan government has established a Ministry of Indigenous Medicine (established in 1980) to revive and regulate the practice within the country. The Institute of Indigenous Medicine (affiliated to the University of Colombo) currently offers undergraduate, postgraduate, and MD degrees in the practice of Ayurveda Medicine and Surgery, and similar degrees in unani medicine.
There are currently 62 Ayurvedic Hospitals and 208 central dispensaries in the public system, and they served almost 3 million people (approximately 11% of Sri Lanka's total population) in 2010. In total there are currently approximately 20,000 registered practitioners of Ayurveda in the country.
According to the Mahavamsa, the ancient chronicle of Sinhalese royalty written in the sixth century A.D., King Pandukabhaya of Sri Lanka (reigned 437 BC to 367 BC) had lying-in-homes and Ayurvedic hospitals (Sivikasotthi-Sala) built in various parts of the country. This is the earliest documented evidence available of institutions dedicated specifically to the care of the sick anywhere in the world. Mihintale Hospital is the oldest in the world.
Ayurveda is a system of traditional medicine developed during antiquity and the medieval period, and as such comparable to pre-modern Chinese and European systems of medicine. However, beginning in the 1960s, Ayurveda has begun to be advertised as "alternative medicine" in the West. Due to different laws and medical regulations in the rest of the world, the unregulated practice and commercialisation of ayurvedic medicine has raised ethical and legal issues. In some instances, ayurvedic practices or terminology have also been adapted specifically for Western consumption, notably in the case of "Maharishi Ayurveda" in the 1980s; in some cases, this has involved active fraud on the part of proponents of Ayurveda in an attempt to falsely represent the system as equal to the standards of modern medical research.
As a traditional medicine, many ayurveda products have not been tested in rigorous scientific studies and clinical trials. In India, research in ayurveda is undertaken by the statutory body of the Central Government, the Central Council for Research in Ayurveda and Siddha (CCRAS), through a national network of research institutes. A systematic review of ayurveda treatments for rheumatoid arthritis concluded that there was insufficient evidence, as most of the trials were not done properly, and the one high-quality trial showed no benefits. A review of ayurveda and cardiovascular disease concluded that the evidence for ayurveda was not convincing, though some herbs seemed promising.
Many plants used as rasayana (rejuvenation) medications are potent antioxidants. Neem appears to have beneficial pharmacological properties. According to Cancer Research UK, "there is no evidence that Ayurvedic herbal medicines can prevent, treat or cure cancer in humans".
Rasa shastra, the practice of adding metals, minerals or gems to herbs, may include toxic heavy metals such as lead, mercury and arsenic. Adverse reactions to herbs due to their pharmacology are described in traditional ayurvedic texts, but ayurvedic practitioners are reluctant to admit that herbs could be toxic and that reliable information on herbal toxicity is not readily available; there is a communication gap between modern medicine practitioners and Ayurvedic practitioners.
According to a 1990 study on ayurvedic medicines in India, 41% of the products tested contained arsenic, and 64% contained lead and mercury. A 2004 study found toxic levels of heavy metals in 20% of ayurvedic preparations made in South Asia and sold in the Boston area; it concluded that ayurvedic products posed serious health risks and should be tested for heavy-metal contamination. A 2008 study of more than 230 products found that approximately 20% of remedies (and 40% of rasa shastra medicines) purchased over the Internet from U.S. and Indian suppliers contained lead, mercury or arsenic. In 2012 the U.S. Centers for Disease Control and Prevention (CDC) linked Ayurvedic drugs to lead poisoning, based on some cases where toxic materials were found in the blood of pregnant women who had taken Ayurvedic drugs.
Ayurvedic proponents believe that the toxicity of these materials is reduced through purification processes such as samskaras or shodhanas (for metals), similar to the Chinese pao zhi, although the ayurvedic technique is more complex and may involve prayers as well as physical pharmacy techniques. However, these products have nonetheless caused severe lead poisoning and other toxic effects.
Due to these concerns, the government of India ruled that ayurvedic products must specify their metallic content directly on the labels of the product. But, writing on the subject for Current Science, a publication of the Indian Academy of Sciences, M. S. Valiathan noted that "the absence of post-market surveillance and the paucity of test laboratory facilities [in India] make the quality control of Ayurvedic medicines exceedingly difficult at this time."
Most Ayurvedic products are not approved by U.S. Food and Drug Administration. There is an import alert on some medicines issued by the FDA since 2007 which prevents these products entering the United States.
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