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Charaka, one of the founding-fathers of Ayurveda wrote in his magnum opus, Charaka-Samhita, thus:

Dharmartha-Kama-Mokshanamarogyam Moolamuttamam
Rogastasyapahartaraha-Shreyaso-Jeevitasya Cha

“According to the Vedas, the purpose of human life is to strive for the following four Purushartha (Great Goals)—

1. Dharma (pursuing one’s religion), 
2. Artha (attaining economic development), 
3. Kama (accomplishing regulated sense-gratification) and 
4. Moksha (attaining liberation). 

The basic requisite for attaining all the four Purushartha is Arogya (health). The greatest enemy of Arogya is Roga (diseases) that are the main obstacles for the human beings in their path to the Great Goals.”

http://arogyabharati.org/