Can one get ill through fear?
Yes. I knew someone who was so full of fear that he got cholera! There was cholera in the next house and he got so frightened that he caught the illness and without any other reason, there was no other reason for his catching it: it was through sheer fright. And it is a very common thing; in an epidemic, it is so in the majority of cases. It is through fear that the door is opened and you catch the illness. Those who have no fear can go about freely and generally they catch nothing. But still as I have said there,1 you may have no fear in the mind, you may have no fear even in the vital, but who has no fear in the body?… Very few.
Ref: Words of The Mother Vol. III