Essential Biohacking Supplements
For health, longevity, and wellbeing.
Books · Essays · Health
Survival. Health. New Thinking.
Books for clarity, inner strength, and a more conscious life.
My work revolves around presence, resilience, gratitude, and physical self-responsibility. It brings together personal experience and practical impulses for people who want to live more consciously, understand more deeply, and take better care of themselves — mentally and physically.
New · Available for preorder
Schlaf als Medizin
Better sleep. Longer life.
I know from personal experience what it is like to be unable to sleep. What really helps with sleep problems — and why the most effective remedies cost nothing. A science-based, accessible guide for everyday life. German edition.
Preorder the eBook now at the introductory price of €4.99. It will be published on October 27, 2026 and will be available to you automatically from that date.
The introductory price is valid through November 10, 2026. After that, the eBook will cost €7.99.
Library
My Books
Books for adults and children — for people who sense that life holds more, and who are willing to look a little deeper.
Available now
(Un-)Breakable
The true story of my second life. German edition.
Life Wisdom
Timeless reflections for a grateful and peaceful life.
Upcoming projects · In preparation
The Drunken Civilization
How alcohol shaped the world — and why people drink even when they know it can harm their health.
A personal project from the heart
A story that began with my daughter.
The Little Honey Bear and the Flying Coconut
A warm-hearted jungle adventure about friendship, courage, and the joy of discovering the world.
The idea grew from the imagination of my then nine-year-old daughter and from creating the story together — which gives this book a special place in my library.
In conversation
A conversation about the time that changed my life forever.
Markus Leyacker-Schatzl and I talk about my leukemia diagnosis, the hardest months of my life, and what changes when health can no longer be taken for granted.
Watch the interview on YouTube →I tell the full story of my second life in (Un-)Breakable (German edition).
Order the book on Amazon →
Life Wisdom
A collection of timeless reflections on love, freedom, gratitude, and inner peace. A quiet book for readers who want to pause, see more clearly, and return to what matters.
The texts are short, distilled, and intentionally accessible — a companion for moments of stillness, personal reflection, and deeper orientation.
(Un-)Breakable
The true story of my second life: a life-threatening cancer diagnosis, the confrontation with mortality, and the long road back into life.
A personal book about fear, hope, resilience, family, vulnerability, and the question of what truly matters when nothing can be taken for granted anymore.
Essential Biohacking Supplements
A practical guide to selected supplements for health, energy, recovery, longevity, and wellbeing.
The book combines accessible foundations with concrete impulses for people who want to support their bodies more consciously — without unnecessary hype.
The Little Honey Bear and the Flying Coconut
A warm-hearted jungle adventure about friendship, courage, curiosity, and the small wonders that appear when children discover the world with an open heart.
A loving book to read aloud and explore together — created with imagination, warmth, and a sense of wonder.
Sleep as Medicine
Sleep as Medicine combines modern sleep science with concrete strategies for better sleep. It explains in accessible terms what happens in the body and brain during the night, how our internal clock works, and why good sleep is one of the foundations of health, performance, and psychological stability.
It also explores why sleep so often falls out of balance today and which factors play a role — from light, stress, and nutrition to movement, temperature, and our daily habits.
The practical section translates the science into concrete steps for everyday life and also looks at what can help when basic sleep hygiene alone is not enough.
Among the topics covered
- Sleep, the brain, and circadian rhythms
- Sleep deprivation and sleep disorders
- Light, nutrition, movement, stress, and recovery
- Science-based strategies for better sleep
The Drunken Civilization
How alcohol shaped the world.
A narrative nonfiction book about alcohol as one of the most underestimated forces in human history — from early rituals and agriculture to religion, trade, politics, war, and the modern health debate.
At its center lies a deeply human health question: why do people keep drinking even when they know alcohol can harm the body, sleep, brain, relationships, and lifespan?
The book connects history, culture, biology, and psychology. It shows why alcohol was never just a drink, but a social tool for belonging, comfort, courage, disinhibition, ritual, power, and escape — and why those same functions make it both powerful and dangerous.
The book is currently in preparation. Newsletter subscribers will receive updates about the release.
Essays
Thoughts between books
Shorter texts on health, resilience, survival, sleep, biohacking, and new thinking — a growing archive of personal observations and practical impulses.
All essaysNew · Essay
Survival Is Not an Accident
Why healing after severe illness requires extreme resilience, endurance, help from many people, and a whole-person view of health.
Read →Essay
Sleep as Foundation
Why sleep is not recovery at the edge of life, but one of the deepest foundations of healing, clarity, and rebuilding.
Read →Essay
Health Begins with Responsibility
On the difference between control and responsibility — and why a good life needs more than optimization.
Read →Reader reviews
What readers say
Six selected Amazon reviews of “(Un-)Zerbrechlich” and “Essentielle Biohacking Supplements”. Excerpts translated from German.
(Un-)Zerbrechlich
★★★★★
“An incredibly moving story that gives courage and, at the same time, serves as a wake-up call.”
Amazon · · Verified purchase
Translated excerpt from a German review
Book reviews on Amazon →Essentielle Biohacking Supplements
★★★★★
“Amid the endless range of supplements, this excellent reference book provides indispensable guidance, clearly explained and scientifically grounded.”
Amazon ·
Translated excerpt from a German review
Book reviews on Amazon →(Un-)Zerbrechlich
★★★★★
“I read the book (Un)zerbrechlich in almost a single day. It is written in such an interesting and engaging way that you cannot stop reading.”
Amazon · · Verified purchase
Translated excerpt from a German review
Book reviews on Amazon →Essentielle Biohacking Supplements
★★★★★
“The book is clearly written, encourages reflection, and motivates you to take a more conscious approach to your own health.”
Amazon ·
Translated excerpt from a German review
Book reviews on Amazon →(Un-)Zerbrechlich
★★★★★
“A deeply moving story and a very honest description of the medical and personal circumstances. Highly recommended!”
Amazon · · Verified purchase
Translated excerpt from a German review
Book reviews on Amazon →Essentielle Biohacking Supplements
★★★★★
“Practical tips on intake and use (dosage, timing, natural sources, sensible combinations, and synergistic effects) are supplemented by information on safety and potential side effects.”
Amazon ·
Translated excerpt from a German review
Book reviews on Amazon →