Salt, once valued at its weight in gold, is now declared “white death” and perhaps the main enemy of a healthy lifestyle. But this is only one side of the coin, the other is that a lack of sodium is no less harmful to the body than its excess. Moreover, many doctors claim that more than a dozen diseases can be cured with salt. How to understand these contradictions? Is salt really a poison or a medicine? Can it really be used for treatment, and if so, how? The book you are holding in your hands will answer these and other questions.