The Center For Disease Control (CDC) dictates that "Mold is unacceptable in any home or building." (www.cdc.gov)
Exposure to damp and moldy environments may cause a variety of health effects. Some people are sensitive to molds. For these people, molds can cause nasal stuffiness, throat irritation, coughing or wheezing, eye irritation, or, in some cases, skin irritation. People with mold allergies may have more severe reactions. Immune-compromised people and people with chronic lung illnesses, such as obstructive lung disease, may get serious infections in their lungs when they are exposed to mold.
There are also medical studies linking mold to certain types of cancer and neurological brain damage in some people.
In 2004 the Institute of Medicine (IOM) found there was sufficient evidence to link indoor exposure to mold with upper respiratory tract symptoms, cough, and wheeze in otherwise healthy people; with asthma symptoms in people with asthma; and with hypersensitivity pneumonitis in individuals susceptible to that immune-mediated condition. The IOM also found suggestive evidence linking indoor mold exposure and respiratory illness in otherwise healthy children.
In addition, in 2004 the IOM found sufficient evidence to link exposure to damp indoor environments in general to upper respiratory tract symptoms, cough, and wheeze in otherwise healthy people and with asthma symptoms in people with asthma. The IOM also found limited or suggestive evidence linking exposure to damp indoor environments in general to shortness of breath, to respiratory illness in otherwise healthy children and to potential development of asthma in susceptible individuals. In 2009, the World Health Organization issued additional guidance, suggesting mold be responsible for the increase in asthma and upper respiratory infections world-wide. Other recent studies have suggested a potential link of early mold exposure to development of asthma in some children, particularly among children who may be genetically susceptible to asthma development, and that selected interventions that improve housing conditions can reduce morbidity from asthma and respiratory allergies.
A link between other adverse health effects, such as acute idiopathic pulmonary hemorrhage among infants, memory loss, or lethargy, and molds, including the mold Stachybotrys chartarum (Stachybotrys atra), have been published. Further studies are needed to find out what other causes contribute to acute idiopathic hemorrhage and other adverse health effects.
BASIC MOLD FACTS
What many people don't realize is that mold can make you extremely sick, or even kill you. According to the Environmental Protection Agency (EPA),1 all molds have the potential to cause ill health. The type and severity of your symptoms depend, in part, on the types of mold present, the extent of your exposure, your age and general health, and your existing sensitivities or allergies.
At a 2003 environmental medicine symposium in Dallas, studies of more than 1,600 patients suffering health issues related to fungal exposure were presented. These patients experienced major medical problems, including the following:
Fungi grow by releasing reproductive cells (spores) into the air, just as plants reproduce by spreading seeds. The airborne spores are invisible to the naked eye, which is a major reason mold is such a problem. It is not uncommon to find hundreds or even thousands of mold spores per cubic foot of indoor air. Spores are extremely small (1-100 microns)—20 million spores would fit on a postage stamp.
Spores can survive harsh environmental conditions, such as dryness, that do not support normal mold growth. In fact, many spores can lie dormant for decades until favorable conditions allow them to spring back to life.
Molds can be found almost anywhere; they can grow on virtually any substance, provided moisture and oxygen are present. There are molds that can grow on wood, paper, carpet, tile, sheetrock, insulation, leather, fabrics, and foods. Molds survive by digesting whatever substrate they are growing on, which is a real problem when it happens to be your floorboards. There is no way to eliminate all mold and mold spores from your indoor environment; the only way to control indoor mold growth is to control moisture. The most common indoor places for mold to take hold are damp areas, such as: