Mold is natural, so what's the big deal?

Molds are natural and generally pose no adverse health effects outside the home. However, mold indoors can be an indoor air issue. Mold produces spores that become airborne. These spores and mold fragments are introduced into the respiratory system, where they can cause allergic reactions, trigger asthma attacks, and cause other health problems. EPA A Brief Guide to Mold and Moisture Control . See also Healthy Homes Partnership