Understanding Autism.
Building Skills
and Behaviors.

Parents of a newly diagnosed child: start with You Are Not Alone, everything Kitzerow learned about autism as a parent, written from one parent to another.

Parents and educators building skills and behaviors: start with the NeuroToggle® book, which matches teaching strategies to neuroplasticity.

Anyone who wants the story behind the work: read the memoir, Discovering Autism and the Comorbidities Along the BH4 Pathway, which tells how and why Kitzerow made her discoveries.

Kitzerow used a neuroplasticity-based protocol that leverages early intervention. It is an educational approach, not a medical intervention. Each part of that journey is covered in its own resource:

The overview: From Silence to Speech summarizes how Kitzerow helped her daughter speak.

Everything she learned, including the full protocol: You Are Not Alone covers everything Kitzerow learned about autism, from one parent to another, including the complete protocol she used.

Understanding nonverbality: the nonverbal autism overview explains nonverbal autism and speech access.

The teaching method: the approach that helped her daughter speak became NeuroToggle®, which matches teaching strategies to neuroplasticity.

To understand autism, Kitzerow synthesized dense literature across disciplines into two systems. Both are syntheses: they organize established research from genetics, biochemistry, physiology, neuroscience and education into clear systems parents, educators and researchers can use.

NeuroToggle® matches teaching strategies to neuroplasticity, so skills and behaviors can be built.

BioToggle® is a system for explaining genetic regulation and physiological plasticity. It is the system for understanding epigenetics.

Autism is a neurodevelopmental disorder, meaning the nervous system develops and functions atypically, impacting skill and behavior development. The circuitry behind skills and behaviors is developed through experience and constrained by biology, which is why an education-based system is used for intervention.

The two systems do different jobs.

NeuroToggle® is for intervention. Because teaching can change that circuitry, NeuroToggle® matches teaching strategies to neuroplasticity, making it an educational tool parents and educators can use.

BioToggle® is for understanding. It explains how genetic regulation drives physiological plasticity, and it can be used to understand the downstream impact of genetic mutations. It does not explain how to intervene.

Correcting a genetic mutation at its source would require gene therapy, and possibly protein-based therapies, which are still being researched. ARIA is now funding research in these areas.

While synthesizing literature across disciplines into NeuroToggle® and BioToggle®, Kitzerow formed a novel hypothesis: Kitzerow's Autism and the Comorbidities Cascade. It proposes:

• A prioritized stress response. Genetic and epigenetic factors induce a stress response that is prioritized over typical neurodevelopment and systemic function.
• Reallocation through the BH4 Shunt. Resources are reallocated through the BH4 Shunt, driven by redox-regulated cellular need.
• Traits cluster into phenotypes. Autism and comorbid traits cluster into phenotypes based on the type, duration, timing, strength and downstream impact of those changes.

She tested it with the Jigsaw Puzzle Methodology, and since its 2023 release it has been compared against independent research as new studies are published. Her papers present the hypothesis and the conclusions of her testing.

The Cascade is still being researched, and its validation depends on continued testing and convergent evidence.

Origin: Proposed by Kimberly Kitzerow. Publicly documented since 2021, first published in book form in 2023, on ResearchGate since January 2024, and registered with the U.S. Copyright Office. View the documented timeline →