Using salt in a Electro-plating tank to make the operation work to plate metal is one of the oldest know methods!
The same is true for the body, "IF" the body does not have any salt index to it's body fluids, then how do you suppose the body may send or carry any Electro-magnetic Energy?
It is kinda like a bath tub full of Distilled water, this may not carry any Electrical Energy and you could be in it and someone may could put an electrical wire in it and you may not get shocked, but "IF" you add some salt to the water, so that the water may now carry the Electrical Current, then you may get Electrocuted!
Do you suppose this may be the case for worms in the body also?