What Is Biotoxin Illness?

Biotoxin illness refers to a chronic condition caused by exposure to toxic substances of biological origin — such as mycotoxins from mold, bacterial endotoxins, or other environmental biotoxins. These toxins can trigger a persistent inflammatory response in genetically susceptible individuals.

Chronic Inflammatory Response Syndrome (CIRS)

Chronic Inflammatory Response Syndrome (CIRS), a term introduced by Dr. Ritchie Shoemaker, describes a multi-system, multi-symptom illness that occurs when the body cannot properly clear biotoxins after exposure to contaminated environments — such as water-damaged buildings.

“In people who don’t have the right immune response genes, biotoxins can remain in the body indefinitely, continuing to cause inflammation and symptoms.” — Dr. Ritchie Shoemaker
“There is momentum building in our understanding of Chronic Inflammatory Response Syndrome (CIRS) — this new knowledge is sweeping our efforts forward in a more defined direction.” — Dr. Andrew Heyman

Common Symptoms

  • Fatigue and weakness
  • Brain fog, memory loss, or difficulty concentrating
  • Muscle and joint pain
  • Light sensitivity and headaches
  • Sinus congestion, cough, or shortness of breath
  • Digestive upset and temperature dysregulation

Why It Matters

Because CIRS and biotoxin illness affect multiple systems, symptoms are often misdiagnosed as chronic fatigue, fibromyalgia, or anxiety — leaving many people searching for answers for years. Understanding and identifying biotoxin exposure is the first step toward proper recovery.

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Disclaimer: This content is for informational purposes only and should not be taken as medical advice. Always consult a qualified healthcare professional familiar with environmental medicine.

Dr. Andrew Heyman

Dr. Andrew Heyman is the world’s leading authority on biotoxin illness.
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