Ayurveda, the ancient existing health practice, is believed to have been originated around 4500 B.C. But the first documentation of Ayurvedic knowledge really took time.
Finally, it got prefectly documented in 2500 BC.

Ayurveda is nothing but a natural health system, involving

Earth, Water, Fire, Air, Ether
&
Mind, Intelligence, Ego

Ayurveda imparts natural healing by bringing in a natural balance with regard to the imbalance of these various elements supporting life.