Mold in the home can be a health hazard if it's allowed to grow and isn't handled properly.
The type and severity of health effects depend upon:
People most likely to experience health problems from mold include:
Most molds are allergenic and can trigger asthma attacks in susceptible people. Some molds can emit mycotoxins in certain conditions. The Centers for Disease Control indicate that for "people sensitive to molds, exposure can cause symptoms such as nasal stuffiness, eye irritation, wheezing, or skin irritation. People with serious allergies to molds may have more severe reactions such as fever and shortness of breath. Some people with chronic lung illnesses, such as obstructive lung disease, may develop mold infections in their lungs."
For more information about mold and moisture, its health effects and ways to eliminate, clean and remove mold, you can also visit The Environmental Protection Agency's site on mold.