When healthy eating makes you sick: More and more people in Germany suffer from fructose malabsorption, an intolerance to fructose. Fructose is found above all in "healthy" fruit and vegetables and is also added to many finished products as a "natural sweetness". It causes unpleasant symptoms such as abdominal cramps, nausea or diarrhoea. This guidebook provides a compact overview of the causes of fructose intolerance and provides useful tips for dealing with the disease. The tried and tested three-phase programme helps you to become symptom-free again - without having to do without a healthy diet. Detailed tables reveal which foods can be eaten without hesitation and which should be avoided. Numerous recipes for a diet change after the three phases help additionally to the individual.