Can basement mold make you sick? If you have damp or mold in your home, then you probably want to know if your indoor air quality has been compromised and whether it’s likely that you and your family will suffer respiratory problems in the future.
Some people are more likely to experience health implications as a result of basement mold than others, so keep reading to find out how you can protect those who are at risk. In addition, we'll be taking a look at the steps that can be taken to reduce the risk of falling ill as a result of mold, such as ventilating your home, reducing the presence of condensation and using a dehumidifier.
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For more on using a dehumidifier in your home check out our feature on whether dehumidifiers are good for asthma (opens in new tab).
Can basement mold make you ill?
The National Institute of Environmental Health Sciences (NIEHS) (opens in new tab) outlines the most common types of basement mold, several of which can cause illness. This includes alternaria – a fast-growing brown-black mold that can cause serious infections – and stachybotrys chartarum – which is often referred to as toxic black mold and thrives on damp building materials such as wood and wallpaper. Somewhat rarer is aspergillus, a type of mold that can be highly damaging to people with weakened immune systems or lung problems, such as asthma.
According to the American Lung Foundation (opens in new tab), anyone – whether or not they are allergy suffers – can experience eye, skin, nose, throat and lung irritation when exposed to airborne mold particles and symptoms can include:
- Worsening of asthma
- Nasal congestion
- Sore throat
However, the impact of basement mold can reach far beyond these symptoms. Indoor Environment Health Consultant John McBride acknowledges that, of the many species of mold that might be present in a basement or somewhere else in the home, many are cytotoxic, neurotoxic and immunotoxic. This means they can cause cell damage and adversely affect the functioning of the nervous and immune systems.
Remember, if you are concerned that exposure to damp or mold is making you or someone else unwell, you should always seek professional advice.
- Related: What is the Air Quality Index? (opens in new tab)
Who might be at risk from basement mold?
So, who's most at risk of becoming sick from basement mold? "There is a misunderstanding that someone is allergic to mold, when in reality there are a number of reasons someone can be affected," McBride told Live Science.
One study published in the Frontier in Immunology (opens in new tab) journal indicates that the factors contributing to what is referred to as dampness and mold hypersensitivity syndrome (DMHS) could be a combination of:
- Genetic predisposition
- Cumulative exposure time over the course of someone's lifetime
- The age at which someone was first exposed to toxic mold microbes
What we do know is that people who are more sensitive to being ill as a result of basement mold are babies and children, the elderly, people with existing skin problems such as eczema and respiratory problems such as allergies, as well as people who have a weakened or compromised immune system.
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"Keep in mind that long-term short-dose exposure can be just as harmful as short-term large-dose exposure," said McBride. "Basement mold can make you sick, so it’s vital you do whatever you can to eliminate moisture and reduce the risk of mold growing."
If you think you might be at risk, it’s important to discuss your concerns with a health professional.
How to prevent sickness from mold
"To avoid basement mold making you sick, the most important thing is to deal with it immediately," said McBride. "And keep in mind that molds don't only grow in basements, they can thrive unseen behind baseboard heating, between walls and in attics. Basically, anywhere moisture can be present, which is why heating, ventilation and air condition systems are notorious for creating mold issues."
And because mold can grow within 24 hours of an area becoming wet, McBride suggests reducing the risk of long-term exposure by tackling the source of any excess moisture in your home – whether that’s condensation or a leak. When you know what's causing the damp problem, you can carry out the appropriate home repairs.
You may need to get a professional to remove mold for you, but if it's only a small amount you could opt to deal with it yourself. However, if you do decide to tackle mold patches yourself, be sure to protect your health from toxic mold microbes by wearing an N-95 mask (available at hardware stores), disposable gloves and goggles.
“Fungicides can be just as toxic as mold, so I would use an everyday household detergent to clean the area,” McBride told Live Science. “You’ll also need to contain and decontaminate any items that have been affected. For example, storage boxes, furniture or documents, in order to reduce the spread of toxic microbes. You can use a dehumidifier to help prevent mold, however, these can be susceptible to growing mold themselves, so be sure to maintain it very closely.”
Other preventative measures aimed at reducing moisture levels in the home include increasing air movement and ventilation by opening windows and doors and installing extraction fans in the basement, bathroom and kitchen.
For more on this topic, check out our feature on whether condensation on windows is bad (opens in new tab).