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<big>'''Abstract'''</big>

<big>'''Abstract'''</big>

<div style="text-align:justify;">This chapter describes causes of environmental calamities leading to annihilation of communities (not limited to epidemics), along with their remedial measures. The queries and solutions about effects of afflictions caused due to such calamities on individuals whose constitution, immunity, lifestyle adaptations are “different”. Any contamination of four factors - vayu (air), udaka (water), desha (land), and kala (season) - results in outbreak of epidemics. To manage these outbreaks, one has to get hold of drugs that are potent in all aspects (rasa, guna, virya, vipaka etc.) well before any outbreak. Per Ayurveda, sins of the present life or the misdeeds of the past life are the root cause of the vitiation of these four etiological factors of epidemics. Negative emotions like greed, anger, ego, mutual fight, and curses of the wise and the learned can destroy mankind. Characteristics of vitiated (polluted) vayu, jala, desha and kala were explained. Life-span of the individual depends on the daiva (predetermined based on the deeds of past life) and purushakara (human efforts in the present life). Administration of cold substances to cure diseases caused by heat or hot substances, and vice versa, was also discussed in the context of jwara and this principle is applicable to other diseases also. All therapies are broadly classified into two categories i.e., apatarpana (depletion therapy) and brimhana (nourishment therapy). Apatarpana (depletion therapy) includes of langhana (reducing therapy), langhanapachana (reducing therapy and digestion of amadosha), and doshavasechana (elimination of doshas). Patients who are unsuitable for shodhana (elimination therapy) is also highlighted. </div>

<div style="text-align:justify;">This chapter describes causes of environmental calamities leading to annihilation of communities (not limited to epidemics), along with their remedial measures. The queries and solutions about effects of afflictions caused due to such calamities on individuals whose constitution, immunity, lifestyle adaptations are “different”. Any contamination of four factors - vayu (air), udaka (water), desha (land), and kala (season) - results in outbreak of epidemics. To manage these outbreaks, one has to get hold of drugs that are potent in all aspects (rasa, guna, virya, vipaka etc.) well before any outbreak. Per [[Ayurveda]], sins of the present life or the misdeeds of the past life are the root cause of the vitiation of these four etiological factors of epidemics. Negative emotions like greed, anger, ego, mutual fight, and curses of the wise and the learned can destroy mankind. Characteristics of vitiated (polluted) vayu, jala, desha and kala were explained. Life-span of the individual depends on the daiva (predetermined based on the deeds of past life) and purushakara (human efforts in the present life). Administration of cold substances to cure diseases caused by heat or hot substances, and vice versa, was also discussed in the context of jwara and this principle is applicable to other diseases also. All therapies are broadly classified into two categories i.e., apatarpana (depletion therapy) and brimhana (nourishment therapy). Apatarpana (depletion therapy) includes of langhana (reducing therapy), langhanapachana (reducing therapy and digestion of amadosha), and doshavasechana (elimination of doshas). Patients who are unsuitable for shodhana (elimination therapy) is also highlighted. </div>

'''Keywords''': ''Vayu'' (air), ''udaka'' (water), ''desha'' (land), ''kala'' (season),contamination, epidemics, lifespan, ''daiva'' (predetermined), ''purushakara''(human effort of present life).

'''Keywords''': ''Vayu'' (air), ''udaka'' (water), ''desha'' (land), ''kala'' (season),contamination, epidemics, lifespan, ''daiva'' (predetermined), ''purushakara''(human effort of present life).