Like fortune-telling, charms come under the category of superstition, and have no religious value. Yet there are many people today who, because of sickness and misfortunes attribute the cause of their illness and ill-luck to the power of charms. When the cause of certain sickness and misfortunes cannot be ascertained or traced, many people tend to believe that their problems are due to charms or some other external causes. They have forgotten that they are now living in the twentieth century. This is the modern age of scientific development and achievement.
All sicknesses owe their origin to either mental or physical causes.
What he meant was that some diseases could only be cured if the mind was purified. Of course diseases are purely physical and can be cured by a competent doctor. And finally, some inexplicable disorders could be caused by what Buddhist call the ripening of the kammic fruit. This means we would have to pay for some evil deed that we have committed in a past life. If we can understand this in the case of some incurable diseases, we can bear it with greater patience, knowing its real cause.