Whether you want it or not, there are effects of such recitation. For instance, the shloka #44 beginning with ‘tanotu kshhemaM nas-tava vadana soundaryalahari’ gives a general cure for all ailments and sicknesses. Specific cures for specific diseases of the body have also been noted for several shlokas. Each of these only trumpets the power of shabda ( sound ).
There is a shloka for the cure of diseases of the eye and the ear. ‘Your eyes have an extent up to the ears’ says the shloka (#52) ‘gate karNApyarNam ... ime netre’.