Dr. Leonard Bielory, director of the Asthma and Allergy Research Center at the UMDNJ-New Jersey Medical School in Newark, says emergency room visits from asthma attacks quadruple following the fall’s first frost. “There are particles and toxic agents emitted by burning wood that, when inhaled, may cause shortness of breath or wheezing and possibly a life-threatening asthma attack that may require emergency health care.”
Wood Smoke Break Down
Wood smoke from fireplaces and wood-burning stoves contain fine particles and gases that can pose a serious health threat to you and your family. The smoke emitted from wood burning contains the following:
Fine Particles: These particles are so small that several thousand of them could fit on the period at the end of a sentence. They reach the deepest recesses of the lungs and accelerate hardening of the arteries, negatively affecting heart function.
- Nitrogen Dioxide: This odorless gas that can irritate your eyes, nose and throat and cause shortness of breath. In people with asthma, exposure to low levels of NO2 may cause increased bronchial reactivity and make young children more susceptible to respiratory infections. Long-term exposure to high levels of NO2 can lead to chronic bronchitis.
- Carbon Monoxide: This odorless, colorless, poisonous gas interferes with the delivery of oxygen throughout the body and may cause headaches, dizziness and, at higher concentrations, death. Those with cardiac and respiratory disease may be more sensitive to lower levels of this gas.
- Toxic Compounds: These include such compounds as formaldehyde, benzene, methyl chloride and methyl ethyl ketone (a wide range of compounds that usually have no color, taste or smell.) Some cause direct and negative health effects by penetrating deep into the lungs.
- Carbon Dioxide: This greenhouse gas contributes to global climate change.
The above particles found in wood smoke are too small to be filtered by the nose and upper respiratory system, so they end up deep in your lungs. They can remain there for several months causing structural damage and chemical changes to your body without you even being aware.
Not Just Your Household’s Health at Risk
If you don’t have a fireplace or wood-burning stove at home, don’t feel at ease just yet. You’re heath still may be at risk … from your neighbor’s fireplaces and wood-burning stoves.
Because wood smoke contains such tiny particles, the smoke is not stopped by closed doors and windows, and seeps into nearby neighbors’ houses. In fact, during winter months, wood smoke does not rise and often hangs close to the ground, entering yards, houses, schools, and hospitals. Subsequently, areas with valley locations and poor air circulation are affected most.
A recent University of Washington study in Seattle and an EPA study in Boise, Idaho neighborhoods found that indoor PM10 levels (particulate matter – one of six major air pollutants for which there is a national air quality standard) from wood smoke in homes without wood stoves reach an astonishing 50% to 70% of outdoor levels when burning wood. Neighbors to wood fires may unwillingly be breathing smoky air, even if they are not wood burners.
A Higher Risk for Lung Cancer
According to Medical News Today, “Burning wood may be associated with lung cancer, even with people who do not smoke.” Scientists from Mexico gathered blood samples from 62 patients with lung cancer, 9 patients with chronic obstructive pulmonary disease (COPD), and 9 control subjects. Of the patients with lung cancer, 23 were tobacco smokers (37.1 percent), 24 were exposed to wood smoke (38.7 percent), and 15 were not in either category (24.2 percent).
Study results show that 38.7 percent of the patients with lung cancer were nonsmokers who were exposed to continuous wood smoke for over 10 years.