Start Here

New to mold and biotoxin illness? This section introduces the core ideas: what mold illness is, how exposure can affect the body, why some people react more strongly than others, and how recovery typically unfolds. It is the best place to begin before exploring the other topics in the Learning Center.

Mold Allergy vs. Mold Illness

Toxic Mold vs. Mold Allergy: Whatโ€™s the Difference?

How a true mold allergy differs from the broader symptoms some people report after time in damp or water-damaged buildings.

Read the article →

Understanding Mold Illness

What Is Mold Illness? Common Signs, Symptoms, and Patterns

The multisystem symptom patterns associated with damp-building exposure, and why the environmental timeline matters.

Read the article →

Why Some People Get Sick and Others Donโ€™t

Why Does Mold Make Some People Sick but Not Others?

How total load, genetics, baseline health, and real-world exposure shape why people in the same building respond differently.

Read the article →

How Mold Illness Is Evaluated

Where Do You Start When You Suspect Mold Illness?

Seven practical first steps, from tracking symptoms and timing to reducing exposure and working with an experienced practitioner.

Read the article →

Explore all topics in the Mold & Biotoxin Illness Learning Center.

Ready to Learn More?

For deeper, structured learning, explore our educational courses from Drs. Clayton & Christensen for patients and practitioners.

Connect With Us

Follow our mold and biotoxin education, join the community, and stay connected with Drs. Gail Clayton and Margaret Christensen.

The information in this Learning Center is for educational purposes only and is not intended as medical advice. Please consult a qualified healthcare provider about your individual situation.