What is toxic black mold?

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The term “toxic black mold” is sometimes used to refer to mold from the genus Stachybotrys, but that can be misleading. First of all, the mold itself is not toxic, although it can produce toxins (called mycotoxins) that can be ingested or inhaled and have been linked to adverse health effects. Even more confusing, all black mold is not Stachybotrys, and Stachybotrys doesn't always appear black. As with any other mold, a growing colony of Stachybotrys should be removed carefully.