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Ayurveda literally means "Science of life" or "Knowledge of life" .<ref>Official document by World Health Organization on Benchmarks for training Ayurveda available from https://www.who.int/medicines/areas/traditional/BenchmarksforTraininginAyurveda.pdf accessed on 30/05/2020</ref> This life-care and healthcare system deals with good, bad, blissful and sorrowful life. It describes all wholesome and unwholesome for life, longevity, and about what Ayu (life) is in itself. [[Deerghanjiviteeya Adhyaya#Definition of Ayurveda|[Cha.Sa. Sutra Sthana 1/41] ]] It is not merely a system of medicine, rather it is a way of life to increase lifespan by preventing or delaying the aging process. <ref>Sharma H., Chandola H.M., Singh G., Basisht G. Utilization of Ayurveda in health care: an approach for prevention, health promotion, and treatment of disease. Part 1 – Ayurveda in primary health care. J Altern Complement Med. 2007;13(9):1011–1019.</ref>

Ayurveda literally means "Science of life" or "Knowledge of life" .<ref>Official document by World Health Organization on Benchmarks for training Ayurveda available from https://www.who.int/medicines/areas/traditional/BenchmarksforTraininginAyurveda.pdf accessed on 30/05/2020</ref> This life-care and healthcare system deals with good, bad, blissful and sorrowful life. It describes all wholesome and unwholesome for life, longevity, and about what Ayu (life) is in itself. [[Deerghanjiviteeya Adhyaya#Definition of Ayurveda|[Cha.Sa. Sutra Sthana 1/41] ]] It is not merely a system of medicine, rather it is a way of life to increase lifespan by preventing or delaying the aging process. <ref>Sharma H., Chandola H.M., Singh G., Basisht G. Utilization of Ayurveda in health care: an approach for prevention, health promotion, and treatment of disease. Part 1 – Ayurveda in primary health care. J Altern Complement Med. 2007;13(9):1011–1019.</ref>

==What is Ayurveda?==

==What is Ayurveda?==

==Source of Ayurveda==

==Source of Ayurveda==

There are four major ancient Indian compendiums of knowledge (veda) named Rigveda, Yajurveda, Samaveda, and Atharvaveda. Rigveda (2000 BC) is the oldest recorded document regarding use of plants as medicine in India, and this tradition continued in another ancient text, Atharvaveda (1500-1000 BC), which described more plants and introduced basic concepts.<ref>Official document by World Health Organization on Benchmarks for training Ayurveda available from https://www.who.int/medicines/areas/traditional/BenchmarksforTraininginAyurveda.pdf accessed on 30/05/2020</ref> Ayurveda physicians owe their loyalty to the Atharva Veda because this deals with the treatment of diseases by resorting to various practices like sacrifices, prayers, and chants, charity, moral discipline, the atonement of sins, austere practices like fasts, etc. These are advocated for treatment as well as for living a healthy, long life.  

There are four major ancient Indian compendiums of knowledge (veda) named Rigveda, Yajurveda, Samaveda, and Atharvaveda. Rigveda (2000 BC) is the oldest recorded document regarding use of plants as medicine in India, and this tradition continued in another ancient text, Atharvaveda (1500-1000 BC), which described more plants and introduced basic concepts.<ref>Official document by World Health Organization on Benchmarks for training Ayurveda available from https://www.who.int/medicines/areas/traditional/BenchmarksforTraininginAyurveda.pdf accessed on 30/05/2020</ref> Ayurveda physicians owe their loyalty to the Atharva Veda because this deals with the treatment of diseases by resorting to various practices like sacrifices, prayers, and chants, charity, moral discipline, the atonement of sins, austere practices like fasts, etc. These are advocated for treatment as well as for living a healthy, long life.  

Thus,it is sourced as Upaveda from Atharva veda.[[Arthedashmahamooliya Adhyaya#Source of Ayurveda| [Cha.Sa. Sutra Sthana 30/21] ]]

Thus,it is sourced as Upaveda from Atharva veda.[[Arthedashmahamooliya Adhyaya#Source of Ayurveda| [Cha.Sa. Sutra Sthana 30/21] ]]

The above are clinical parameters of good quality of life.  

The above are clinical parameters of good quality of life.  

== Signs of decrease in lifespan==

== Signs of decrease in lifespan ==

The decrease of lifespan is signaled by various abnormal changes in the sensory perception, objects of perception, mind, intellect, and movement. These signals help in predicting the remaining lifespan and death of an individual at a particular moment. ''Svabhava''(return to the natural state), ''uparama'' of ''pravritti'' (cessation of all activities), ''marana'' (death), ''anityata'' (temporary state) ''nirodha'' (restriction in the continuation of life)- all these are synonymous with death. In the absence of such signs and symptoms, the life span is to be determined as unlimited from the prognostic point of view. In Ayurveda, life span is determined by the characteristics of natural constitution.[[Arthedashmahamooliya Adhyaya#Signs of decreasing life span|[Cha.Sa. Sutra Sthana 30/25] ]]

The decrease of lifespan is signaled by various abnormal changes in the sensory perception, objects of perception, mind, intellect, and movement. These signals help in predicting the remaining lifespan and death of an individual at a particular moment. ''Svabhava''(return to the natural state), ''uparama'' of ''pravritti'' (cessation of all activities), ''marana'' (death), ''anityata'' (temporary state) ''nirodha'' (restriction in the continuation of life)- all these are synonymous with death. In the absence of such signs and symptoms, the life span is to be determined as unlimited from the prognostic point of view. In Ayurveda, life span is determined by the characteristics of natural constitution.[[Arthedashmahamooliya Adhyaya#Signs of decreasing life span|[Cha.Sa. Sutra Sthana 30/25] ]]

Ayurveda is eternal because of the following: It has no beginning; its characteristics are self-evident, and those of things dealt with it are eternal. It has been seen that Ayu (the combination of body, its organs, mind, and soul) and intelligence about Ayu (knowledge about Ayu) are perpetual. Hence Ayu and its knowledge (i.e. Ayurveda) have been eternal. The knower becomes eternal after knowing Ayurveda. Concepts such as happiness and suffering (i.e., health and illness), therapeutics and pathogens, etc. - their causes, signs, and perpetuation are all eternal. This is what is described in Ayurveda.[[Arthedashmahamooliya Adhyaya#Eternal qualities of Ayurveda|[Cha.Sa. Sutra Sthana 30/27] ]] It is observed in clinical practice that the principles described in Ayurveda texts are universal, time tested and stand true on scientific validation tests. For example Samanya Vishesha siddhanta is applicable universally with immense importance.<ref> Pandey Deep Narayan , Pandey Neha Prakash. Universal significance of the principle of Samanya and Vishesha beyond Ayurveda.Journal of Ayurveda and Integrative Medicine.2018;9(4),308-311. available online from https://www.sciencedirect.com/science/article/pii/S0975947617305727 </ref>   

Ayurveda is eternal because of the following: It has no beginning; its characteristics are self-evident, and those of things dealt with it are eternal. It has been seen that Ayu (the combination of body, its organs, mind, and soul) and intelligence about Ayu (knowledge about Ayu) are perpetual. Hence Ayu and its knowledge (i.e. Ayurveda) have been eternal. The knower becomes eternal after knowing Ayurveda. Concepts such as happiness and suffering (i.e., health and illness), therapeutics and pathogens, etc. - their causes, signs, and perpetuation are all eternal. This is what is described in Ayurveda.[[Arthedashmahamooliya Adhyaya#Eternal qualities of Ayurveda|[Cha.Sa. Sutra Sthana 30/27] ]] It is observed in clinical practice that the principles described in Ayurveda texts are universal, time tested and stand true on scientific validation tests. For example Samanya Vishesha siddhanta is applicable universally with immense importance.<ref> Pandey Deep Narayan , Pandey Neha Prakash. Universal significance of the principle of Samanya and Vishesha beyond Ayurveda.Journal of Ayurveda and Integrative Medicine.2018;9(4),308-311. available online from https://www.sciencedirect.com/science/article/pii/S0975947617305727 </ref>   

== Eight specialties of Ayurveda ==

== Eight specialties of Ayurveda ==