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  • Context (DTE): A study by Stanford University highlighted health risks associated with gas and propane stoves. These appliances can significantly elevate indoor air pollution levels of nitrogen dioxide (NO2), a known respiratory pollutant.
  • The research discovered that homes using gas or propane stoves expose residents to an average annual increase of 4 parts per billion (ppb) of NO2.
  • This is concerning because the increase is equal to 75% of the WHO recommended safe limit for indoor and outdoor NO2 exposure.
  • The study affirmed that cooking food emits minimal to no NO2, and electric stoves produce none.

Mitigation Strategies

  • Effective range hoods that vent outdoors.
  • Ensuring proper ventilation while cooking.
  • Consideration of alternative cooking appliances, such as electric stoves or induction cooktops.

About Nitrogen Dioxide (NO2)

  • It is one of six widespread air pollutants.
  • It is formed when fossil fuels such as coal, oil, and methane gas are burned at high temperatures.
  • NO2 and other nitrogen oxides in the outdoor air contribute to particle pollution and to the chemical reactions that make ozone.
  • Road traffic is the principal outdoor source of nitrogen dioxide.
  • Nitrogen dioxide causes a range of harmful effects on the lungs, including:
    • Increased inflammation of the airways.
    • Worsened cough and wheezing.
    • Reduced lung function.
    • Increased asthma attacks.
  • Nitrous oxide (N2O) is a greenhouse gas with significant anthropogenic sources.
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Credit: Marlborough. govt
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