With the FITT method out of the symptom fog – into life
Histamine intolerance – a term that triggers question marks, frustration and uncertainty in many sufferers. The symptoms? Many and varied. The causes? Complex. The solution? So far often diffuse. This is exactly where the new book by Dr. Michael Zechmann-Khreis comes in: “Understanding and mastering histamine intolerance – getting symptoms under control and regaining well-being with the FITT method” has now been published as a printed book and eBook – and finally brings clarity to a difficult topic.
Why this book?
Many people who suffer from histamine intolerance know the feeling: you are tired, your stomach bloats, your skin itches, your heart stumbles – and nobody really knows why. It often takes years before a diagnosis is made. And even then, the question remains: What happens now?
Michael Zechmann-Khreis, nutritional biologist and researcher in the field of intolerances, not only provides answers in this book, but above all a clearly structured, practice-oriented path. As a nutritional biologist, scientist and himself repeatedly affected by intolerances, he knows both sides – the scientific and the personal. This book is therefore not just theory, but a real companion for everyday life.
What can you expect on over 130 pages?

✅ Scientifically sound knowledge – clearly explained
You will learn what histamine actually is, how the body breaks it down (or not), which enzymes play a role, and why other biogenic amines such as tyramine, putrescine or cadaverine can also exacerbate symptoms. Topics such as leaky gut, stress, the vagus nerve and vitamin deficiencies are also discussed – all in an understandable, evidence-based way and without unnecessary scaremongering.
✅ The FITT method – your holistic path
The focus is on the FITT method developed by Dr. Zechmann-Khreis. It goes far beyond the classic diets and incorporates all relevant areas of life: nutrition, stress management, exercise, gut health, mental health and professional counselling. The aim is not to avoid as much as possible – but to regain control and joie de vivre.
✅ Everyday strategies & tools
In addition to clear explanations, the book also offers:
- a 14-day food and symptom diary
- Mental exercises to reduce stress
- Tips on food selection and cooking tricks
- Notes on medical diagnostics
- a critical classification of common myths (e.g. about citric acid, histamine liberators etc.)
Who is the book for?
For all those who:
- want to better understand their symptoms
- have a suspected histamine intolerance
- already have a diagnosis but feel left alone
- for relatives who would like to find out more
- for experts who want to recommend a comprehensible yet well-founded book
What makes this book special:
Dr. Zechmann-Khreis chooses clear, warm and encouraging language. His attitude: You are not alone. Histamine intolerance is complex – yes. But it is not a life sentence. With patience, knowledge and a strategy suitable for everyday life, you can regain control, well-being and, above all, quality of life, step by step.
This book is more than just a guide – it is an encouraging companion for anyone who no longer wants to leave their health to chance. Clear, honest, scientific – and yet easily accessible.
Whether you’ve just been diagnosed or have been looking for solutions for a long time: With the FITT method, you can find your way back to greater well-being.