Sushruta Samhita is a Hindu scripture.
One of the two key sources for the Indian medicinal
tradition known as ayurveda, together with the somewhat older Charaka Samhita.
The principle of the three body humors—vata (wind), pitta
(bile), and kapha (blood)—underpins ayurveda (phlegm).
Although everyone has all three humors, their variable
quantities are used to explain differences in body types, metabolic
dispositions, and personality traits.
An imbalance of these humors is the cause of sickness, whether
produced by environmental factors or personal behaviors, and the condition of
this equilibrium is the state of health.
The Sushruta Samhita has been edited and translated into
other languages, and it has been used as a source for secondary research, such
as Debiprasad Chatto padhyaya's Science and Society in Ancient India, published
in 1977.
You may also want to read more about Hinduism here.
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