Mold & Blood Flow Chronic mold exposure is not just a respiratory or allergy concern — it can also influence blood circulation at the microvascular level , which may explain persistent symptoms even after mold removal. Inflammation and Blood Viscosity Mycotoxins from mold trigger the immune system to release inflammatory cytokines like IL-6 and TNF-α . These cytokines stimulate the liver to produce fibrinogen , a key protein involved in blood clotting. Elevated fibrinogen ca