Detox treatments are in high demand, especially in spring. They cater to our need to be mobile, fit, and healthy. But what are "toxins"? They are unmetabolized substances that remain in the human body and are said to impair its functionality. Conventional medicine argues that toxins are not detectable. And what does naturopathy say? The topic of the balance between acids and bases is equally controversial. Although there is no pathophysiologically detectable "acidosis," products and therapies that supply the body with "bases" are highly sought after. Renowned experts discuss the pros and cons without bias.