Separating the mind and body has resulted in a disconnection of understanding of mind-body interplay. Most modalities tend to treat one or the other, unable to see the manifestation of associated symptoms outside the boundaries of their specific modality.
In ancient China, doctors were paid to keep their patients healthy. Their function could be likened to a gardener cultivating balance in the energetic system. They worked to maintain health rather than just to ‘fix’ the symptoms of deeper issues which when unaddressed end up manifesting in other ways.
The body, with its associated energetic system, acts as a mirror reflecting the state of our mind. Understanding the interplay can be useful in effecting change at the level of cause rather than at the level of symptomatic effect. The true practice of yoga aims to completely remove the interruptions (at all levels) that prevent us from living to our highest human potential.