Dr Jackson Kung'u- Mold Specialist

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Dr. Jackson Kung’u (PhD)- Mold Specialist.
Phone: 905-290-9101

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mold allergy

Is mold in your house making you sick?

Is mold in your house making you sick? This kind of a question would arise if someone suffers from persistent symptoms such as sneezing, runny noses, red eyes and skin rashes that seem to lessen or disappear when the person is not at home. The situation maybe complicated by the fact that only one member in the family would be experiencing these symptoms. Observations suggest that about 20% of the human population can have allergic reactions to mold spores. For asthma sufferers who are very young, elderly or those with weak immune system, mold spores can trigger much more serious problems.Is Mold in Your House Making You Sick?

How to tell if mold in your house is making you sick

As said earlier, if a sufferer tend to get better when out of the house, this suggests that the cause of their illness is in the air within the home. The first step would to determine if mold spores were present in the house. It is important to bear in mind that
mold spores are everywhere. They’re in your house, in your attic, on the street, in your living room, in your kitchen. It’s a question really of how much mold is in your house and what types. Some mold spores are worse than others.

How to tell if you have mold in your house

The obvious sign of mold in your house is the visible mold growth on surfaces. This may appear as fuzzy or hairy growth when the mold is actively growing or powdery when the mold is inactive. The mold comes in different colors such as black, grey, blue, green, white or a shade of these colors. There are also indirect visual signs that suggest your home could be infested by mold. These include signs of water damage such as discoloration, peeling or bubbling paint, and bulging walls or ceilings. A musty or earthy smell is another reliable indicator of mold growth.

The best way to confirm if you are exposed to excessive amounts of airborne mold spores is to test the air in your house or office. To test the air for mold, you could either use a do-it-yourself mold test kit or you could hire a professional to do it for you.

Mold Exposure: Symptoms of Mold Allergy

Mold exposure does not always present a health problem indoors. However some people (about 20% of the human population) are sensitive to molds.  Symptoms of mold exposure are primarily allergic reactions involving the upper respiratory system. Also referred to as mold allergy, the symptoms can include:

  • Sneezing
  • Runny or stuffy nose
  • Cough and postnasal drip
  • Itchy eyes, nose and throat
  • Watery eyes.

Symptoms of mold exposure vary from individual to individual, and range from mild to severe. Some individuals may have year-round symptoms or symptoms that flare up only during certain times of the year when the allergens are present. Currently no exposure limits have been established. The large number of mold species and strains present in the environment and the large inter-individual variability in human response to mold exposure make it difficult to establish exposure limits.

For individuals with mold allergy and asthma, their asthma symptoms may be triggered by exposure to mold spores. In some people, exposure to certain molds can cause a severe asthma attack. Signs and symptoms of asthma include:

  • Coughing
  • Wheezing
  • Shortness of breath
  • Chest tightness.

On some rare occasions, effects of mold exposure may include infections and toxic effects. Serious infections from living molds are relatively rare and occur mainly in people with severely compromised immune system. Many types of molds may produce toxins but only under certain growth conditions. Toxic effects have been reported from eating moldy grain, but evidence is weak that inhaling mold spores in buildings causes toxic effects.

Prevention of mold exposure and ensuing health issues include control of mold growth in the first place by rectifying the moisture problems. Failure to completely dry out building materials after extensive flooding and water damage can result in extensive mold growth.

If you are concerned about mold exposure, check your home to make sure there are no hidden areas of mold growth. Speak to your doctor if you have had previous mold exposure, and discuss any symptoms you may be experiencing.

Mold Spores: what are mold spores?

Several molds that grow both indoors and outdoors, produce spores. Mold spores have been likened to the seeds of a dandelion, but they are microscopic in size. Because of their size, mold spores cannot be seen with the human eye save with the aid of a microscope. Mold spores occur in various colors and shapes, such as round, spheroid, banana-shaped or tadpole-shaped. They can occur in enormous quantities depending on the type of mold producing them, and at all times of the year where the environmental conditions allow.

Mold spores are well known for their ability to cause sensitization and allergic responses.  Exposure to airborne mold remains the biggest concern when looking at molds and their affects on human health.  Mold spores and other fungal structures (e.g. hyphae) contain allergens. These allergens cause mold allergy to sensitive individuals and may also exacerbate asthma. Whether or not the spores are alive, the allergens in and on them may remain allergenic for years.

There is no definite seasonal pattern to mold spores in indoor indoor environments. Growth of mold indoors is determined by the presence/absence of moisture. However outdoor molds are seasonal, first appearing in early spring and thriving throughout summer until fall. Outdoor spore concentration also influences indoor spore concentration as outdoor spores generally infiltrates indoors.

Mold spores are much smaller than pollen grains and easily bypass the normal filtering function of the nose. Inhalation of mold spores into the lung is a common cause of asthma attacks in people who are allergic to molds.

 

Sources of mold spores

Mold spores come from soil and decaying vegetation, and are everywhere in nature. In houses with evaporative cooling and old carpets, mold can be a problem.  Growth of mold in houses increases after a plumbing, roof leak or chronic condensation. Many types of molds are found in soil and house dust.