The Signal Blog

Mold Illness: The Epidemic Hiding in Your Walls and Your Body

Mold illness, clinically known as Chronic Inflammatory Response Syndrome (CIRS), affects approximately 25 percent of the population who carry HLA-DR gene variants that impair their ability to clear mold-derived biotoxins. These individuals develop persistent multi-system inflammation when exposed to water-damaged buildings, experiencing fatigue, brain fog, joint pain, respiratory symptoms, and cognitive dysfunction that standard bloodwork cannot explain. Testing requires specific markers: HLA-DR genotyping, MSH, VIP, MMP-9, TGF-beta 1, C4a, VEGF, and visual contrast sensitivity.