SB 1.18.18 purport…The mental diseases of the present generation are more acute than bodily diseases
SB 2.1.17 purport…. Oṁkāra is the seed of all transcendental sound and it is only the transcendental sound which can bring about the desired change of the mind and the senses. Even a mentally deranged man can be cured by treatment of transcendental sound. In the Bhagavad-gītā, the praṇava (oṁkāra) has been accepted as the direct, literal representation of the Supreme Absolute Truth. One who is not able to chant directly the holy name of the Lord, as recommended above, can easily chant the praṇava (oṁkāra). This oṁkāra is a note of address, such as “O my Lord,” just as oṁ hari om means “O my Lord, the Supreme Personality of Godhead.” As we have explained before, the Lord’s holy name is identical with the Lord Himself. So also is oṁkāra. But persons who are unable to realize the transcendental personal form or name of the Lord on account of their imperfect senses (in other words, the neophytes) are trained to the practice of self-realization by this mechanical process of regulating the breathing function and simultaneously repeating the praṇava (oṁkāra) within the mind.