Yoga therapy uses the methods of yoga to maintain health and/or to cure diseases. Yoga as a therapeutic intervention was and is part of Ayurveda. Scientific studies in recent years have repeatedly proven the effectiveness of yoga in various clinical trials. Thus, yoga therapy has become increasingly established as an independent discipline.
Another reason for this lies in the basic philosophical structure ("Samkhya Karika") on which both Ayurveda and Yoga are rooted. It is postulated that the 'gross' body is nourished by the 'subtle' spirit, and the 'subtle' exists prior the 'gross'. Following this conceptual understanding, Ayurveda and yoga conclude that illnesses also have a deep spiritual cause in most cases, and so body AND mind must be addressed therapeutically. The calming of the mind is the primary goal of yoga. Working with the mind via various methods is the domain of yoga.