Mold Exposure & Hormone Mold and Hormone Signaling: An Overlooked Connection Most people are taught to think of mold exposure as a respiratory or immune issue — allergies, sinus problems, asthma, inflammation. But there is another layer that is far less discussed: endocrine signaling disruption . Certain mycotoxins produced by indoor molds do more than trigger immune responses. Toxicology research has shown that some of these compounds can interact directly with hormone recep