Ayurveda, the Indian system of Medicine and Health, received a lot of encouragement during the Buddhist period, ie., roughly between 500 BC and 600 AD. The Buddhist mendicants in their long journeys all over the world to preach and propagate their religion took along with them ‘the wonderful healing powers of Ayurveda’.
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Buddhism is founded on the principle of Ahimsa (non- violence), the monks were against surgery, associated with pain, and hence viewed as an act of Himsa (violence). So they mainly propagated the branch Kayachikitsa (general medicine).