य एव देहस्य समा विवृद्धये त पव दोषा विषमा वधाय । यस्मादतस्ते हितचर्ययैवं क्षयाद्विवृद्धेरिव रक्षणीयाः
The very same Doshas, which when normal, are the causes for growth of the body, become the causes for its destruction when abnormal. Hence by adopting suitable measures, the body should be protected from their decrease and increase.