This ancient Ayurvedic method is believed to assist offer treatment from a variety of nasal cavity problems and diseases, including the upper respiratory tract. Among these, Nasya therapy is a tried-and-true method for reducing infections and abnormalities of the paranasal sinuses, which are responsible for illnesses of the head such as sinusitis and migraine. This treatment softens and removes the accumulated mucus that has clogged the paranasal sinuses and roots.