The Sun therapy - Vedas

The Rigvedam, 9th anuvaakam, 50 th suktham ,11th verse

उद्यन्नद्य मित्रमह आरोहन्नुत्तरां दिवम
हर्द्रोगं ममसूर्य हरिमाणं च नाशय
Meaning:
Oh Sun! you gave equal priority to all beings in the world. You climb the sky at dawn. Please cure our heart diseases and jaundis,algimers aswell.

In this verse the sun therapy is introduced for above ailments.
I don't know whether our modern science discoverd this matter or not.