About the Book
Spiral Staircase
How Your Ancient Body Navigates the Modern World
By Neil P. Bostick
Your body was built for a world that no longer exists. Inside every cell, a spiral staircase of DNA holds 300,000 years of instructions - written for savannahs, ice ages, firelight, and the company of 150 people you knew by name.
Modern life has rewritten every input your biology expects. The food changed. The light changed. The movement stopped. The tribe disappeared. The ground vanished beneath cushioned shoes. The darkness was replaced by screens. And your body - still running ancient software - is sending error signals you were never taught to read.
Spiral Staircase is a 34-chapter, system-by-system exploration of evolutionary mismatch. It covers every major body system - from your heart (which remembers the savannah) to your gut (which expects dirt) to your immune system (which is looking for parasites it will never find) to your sleep architecture (which still waits for a darkness that no longer comes).
Backed by 250+ peer-reviewed studies, this is not a diet book or a self-help manual. It is the operating manual your DNA has been waiting for you to read.
What Makes This Book Different
Compared to popular works by Lieberman, Harari, Pontzer, and others - Spiral Staircase takes a fundamentally different approach.
Systems-level, not single-topic
Most evolutionary health books focus on diet, or exercise, or sleep. Spiral Staircase covers every major body system - heart, gut, immune, sleep, skin, liver, feet, breath, pain, stress, social connection, and aging - in a single, coherent framework.
Mechanism before prescription
Rather than telling you what to do, this book explains why your body responds the way it does. When you understand the evolutionary logic, the interventions become obvious and the motivation becomes intrinsic.
250+ peer-reviewed citations
Every claim is sourced. From the NIH ultra-processed food trials to the Tsimane cardiovascular studies, from telomere research to microbiome diversity data - the science is specific, recent, and verifiable.
The mismatch framework
Instead of moralizing about modern life, the book uses a single explanatory lens: the gap between what your DNA expects and what the modern world delivers. No guilt, no ideology - just evolutionary logic applied to every system.
Actionable workbook included
The book includes a complete 7-part Mismatch Workbook, a 30-Day Tracker, and an Ancestral Day Blueprint. Plus the free online Mismatch Assessment to measure your evolutionary alignment score.
Written for the intelligent generalist
This is not a textbook and not a self-help book. It is written for curious people who want to understand their own biology without being talked down to or sold a supplement stack.
Systems Covered
About the Author
Neil P. Bostick
Neil P. Bostick is a researcher and writer whose work spans evolutionary biology, functional medicine, and human optimization. His approach is rooted in primary literature - the peer-reviewed studies, clinical trials, and population-level data that most popular health books simplify or skip entirely.
Spiral Staircase represents years of research across dozens of scientific disciplines - from cardiovascular physiology and chronobiology to microbiome science and evolutionary psychology. The result is a book that connects dots most specialists never see, because they rarely look outside their own field.
The conviction behind the book is simple: if you understand why your body works the way it does - the evolutionary logic behind every system - you do not need to be told what to do. The interventions become obvious. The motivation becomes intrinsic. And the results become sustainable.
Read the Full Book
34 chapters, 250+ peer-reviewed sources, the complete 7-part workbook, and the 30-Day Mismatch Tracker. Available now on Amazon.
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Take the free Mismatch Assessment. Track your daily habits, get your Alignment Score, and see where the gap is widest.
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