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== रसधातुदुष्टिहेतवः ॥ Vitiating factors ==

== रसधातुदुष्टिहेतवः ॥ Vitiating factors ==

The dietary, lifestyle factors that directly affect rasa dhatu and its function are listed as below. (Cha vi 5/13)

Rasa dhatu is formed after proper digestion of food. Thus the dietary factors and also some lifestyle related factors directly affect rasa dhatus formation and function. These factors set out the background for development of various diseases which involve rasa dhatu e.g jwara (ज्वरः). Few such factors that directly vitiate rasa dhatu are listed below. <ref>Charaka Samhita (Vimanasthanam Adhyaya 5 Sutram 13)</ref> and its function are listed as below.

# Repeated intake of heavy to digest food

# Repeated intake of heavy to digest food (गुरुआहार)

# Intake of food or drinks that are very cold

# Intake of food or drinks that are very cold (अतिशीत सेवनम्)

# Intake of food that has excess fat content

# Intake of food that has excess fat content (अतिस्निग्ध सेवनम्)

# Overeating  

# Overeating (अतिमात्रं समश्नताम्)

# excessive mental stress and over thinking

# excessive mental stress and over thinking (चिन्त्यानाम् अतिचिंतनात्)

== Rasa Sara purusha characteristic ==

== रससारलक्षणानि ॥ Characteristics of person having supreme quality rasa dhatu ==

तत्रस्निग्धश्लक्ष्णमृदुप्रसन्नसूक्ष्माल्पगम्भीरसुकुमारलोमासप्रभेवचत्वक्त्वक्साराणाम्| सासारतासुखसौभाग्यैश्वर्योपभोगबुद्धिविद्यारोग्यप्रहर्षणान्यायुष्यत्वंचाचष्टे||१०३|| cha vi 8/103

Those who have supreme quality of rasa dhatu in a body are identified by some characteristic features. These features are called as rasa-sarata features (रससारता लक्षणानि). Most of these features are manifested on skin and therefore this is also called as Twaksarata (त्वक्सारता). Thus one can identify the quality of rasa dhatu by assessing presence or absence of following signs in skin.<blockquote>तत्रस्निग्धश्लक्ष्णमृदुप्रसन्नसूक्ष्माल्पगम्भीरसुकुमारलोमासप्रभेवचत्वक्त्वक्साराणाम्| सासारतासुखसौभाग्यैश्वर्योपभोगबुद्धिविद्यारोग्यप्रहर्षणान्यायुष्यत्वंचाचष्टे ॥ (Char. Samh. 8.103)<ref>Charaka Samhita (Vimanasthanam Adhyaya 8 Sutra 103)</ref></blockquote><blockquote>''tatrasnigdhaślakṣṇamr̥duprasannasūkṣmālpagambhīrasukumāralomāsaprabhevacatvaktvaksārāṇām| sāsāratāsukhasaubhāgyaiśvaryopabhogabuddhividyārogyapraharṣaṇānyāyuṣyatvaṁcācaṣṭe ॥ (Char. Samh. 8.103)''</blockquote>Meaning: In persons who are ''tvaksara'' (having constitutional essence of skin), the skin is unctuous (''snigdha''), smooth (''shlakshna''), soft (''mridu''), clean and fresh/adorable (''prasanna'') with fine (''sukshma''), thin (''alpa''), deep rooted (''gambhira'') and delicate (''sukumara'') hairs and is lustrous (''prabha''). This essence indicates happiness, good fortune, power, enjoyment, intelligence, knowledge, health, cheerfulness and longevity.<ref>Available From [https://www.carakasamhitaonline.com/index.php?title=Rogabhishagjitiya_Vimana#Characteristics_of_twak_sara_.28best_quality_of_skin.29 Charaksamhitaonline.com]</ref>

In persons who are ''tvaksara'' (having constitutional essence of skin), the skin is unctuous (''snigdha''), smooth (''shlakshna''), soft (''mridu''), clean and adorable (''prasanna'') with fine (''sukshma''), thin (''alpa''), deep rooted (''gambhira'') and delicate (''sukumara'') hairs and is lustrous (''prabha''). This essence indicates happiness, good fortune, power, enjoyment, intelligence, knowledge, health, cheerfulness and longevity.  

In this way various physical, psychological, emotional and social aspects of having superior quality of rasa dhatu are mentioned by Ayurveda acharyas.

== Importance of Rasa dhatu in health and wellbeing ==

== रसस्य प्रधानता ॥ Importance of Rasa dhatu in health and wellbeing ==

रसजं पुरुषं विद्याद्रसं रक्षेत् प्रयत्नतः |

Rasa  dhatu is that body fluid which provides nourishment to the body. Thus growth, development and nourishment of rest of the body tissues is totally dependent on rasa. Thus, it plays pivotal role in maintaining one's life. Therefore it is said that purusha develops from rasa as described by Acharya Sushruta in the following sutra,<blockquote>रसजं पुरुषं विद्याद्रसं रक्षेत् प्रयत्नतः | अन्नात्पानाञ्च मतिमानाचाराञ्चाप्यतन्द्रितः ॥ (Sush, Samh. 14.12)<ref>Sushruta Samhita (Sutrasthanam Adhyaya 14 Sutra 12)</ref></blockquote><blockquote>''rasajaṁ puruṣaṁ vidyādrasaṁ rakṣet prayatnataḥ | annātpānāñca matimānācārāñcāpyatandritaḥ ॥ (Sush, Samh. 14.12)''</blockquote>Meaning: The existence of purusha depends upon rasa. Therefore, one should protect and maintain the quality and quantity of rasa dhatu with utmost care. It can be achieved through proper diet and lifestyle.

अन्नात्पानाञ्च मतिमानाचाराञ्चाप्यतन्द्रितः ||१२|| (Su su 14/12)

Since the whole body receives nourishment and energy through rasa, if the body has to be kept healthy and strong, one needs to take utmost care of rasa dhatu. One of the 8 branches of Ayurveda known as 'Rasayana' deals with revitalisation and rejuvenation therapies. These also enhance one's immunity and slows down the process of degeneration or ageing. In order to achieve this, Rasa dhatu should be balanced and enhanced. Thus, this branch of Ayurveda has been named after the Rasa dhatu and called as '[[Rasayana (रसायनम्)|Rasayana]] Chikitsa' (रसायन चिकित्सा). It helps in maintaining the best qualities of rasa dhatu and other body components. <blockquote>रसायनतन्त्रं नाम वयःस्थापनमायुर्मेधाबलकरं रोगापहरणसमर्थं च । (Sush. Samh. 1.7)<ref>Sushruta Samhita ([http://niimh.nic.in/ebooks/esushruta/?mod=read Sutrasthanam Adhyaya 1 Sutram 7])</ref></blockquote><blockquote>rasāyanatantraṁ nāma vayaḥsthāpanamāyurmedhābalakaraṁ rogāpaharaṇasamarthaṁ ca ।</blockquote>Meaning: Rasayana as a measure, which prolongs and provides positive health. improves mental faculties and provides resistance and immunity against diseases.

 

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रसनिमित्तमेव स्थौल्यं कार्श्यं च | (su su 15/32)