Despite the commonly held belief that black mold exposure is a serious health concern, no convincing research suggests that exposure to this type of mold causes conditions such as cancer or lung disease.

Mold is a type of fungus. It is present almost everywhere, including the air. In general, normal amounts of mold in the environment do not pose a substantial health risk to healthy people with regular immune system function.

There is no single type of mold called “black mold” — many molds are black. When people use the term, they may be referring to a type called Stachybotrys chartarum (S. chartarum), also known as Stachybotrys atra.

There is no scientific evidence to suggest that exposure to S. chartarum is more dangerous than exposure to any other type of mold.

However, some people may be more sensitive to mold spores than others, and they may develop respiratory symptoms after inhaling even a small number of spores. In large quantities, mold spores can cause ill health in almost anyone.

Therefore, people should remove any mold growth in the home and take steps to prevent it from growing back.

Alexander Davronov [CC BY-SA 4.0 (https://creativecommons.org/licenses/by-sa/4.0)], from Wikimedia Commons

In this article, we look at some facts and myths surrounding black mold exposure. We also describe ways to remove and prevent mold growth in the home.

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