Manas Ayurved

प्रसन्न चेतस: सौख्यमारोग्यं च भवेत्सदा |
अप्रसन्नस्य चित्तस्य रोगा: सर्वे भवन्ति हि ||

Those who have pleasantly contended mind are always very healthy.
Those who have disturbances in their mind; they get afflicted by all kinds of diseases.