For nearly as long as humans have known about black mold, they have worried about its potential effects. During the early 1900s, people began to claim that black mold was extremely toxic and could cause many health issues. Anecdotal reports and studies indicated black mold could lead to everything from congestion to cancer. However, in recent years, experts have raised some doubts surrounding black mold and its presumed effects.


1. Types of Black Mold

One of the main sources of confusion concerning black mold is that people believe it is a single type of mold. In reality, there are many black molds, with the two most common being Stachybotrys chartarum and Aspergillus niger. Both types grow in unique environments, with the former found in cellulose-rich building materials, though it can sometimes appear in soil or grain. A. niger grows primarily on fruits, vegetables, and soil. Because it can sometimes appear in indoor environments, people often confuse it for other types of black mold.

black mold wall onebluelight / Getty Images

More on Facty Health


This site offers information designed for educational purposes only. You should not rely on any information on this site as a substitute for professional medical advice, diagnosis, treatment, or as a substitute for, professional counseling care, advice, diagnosis, or treatment. If you have any concerns or questions about your health, you should always consult with a physician or other healthcare professional.