If you have a garage attached to your house, you could be at higher risk of developing leukemia or other forms of cancer.
Health Canada has expressed concern that benzene from car exhaust and other fumes could be entering homes. It’s now working on guidelines to
help homeowners prevent the toxic gas from seeping into their homes.
Benzene is a volatile organic compound, or VOC, that’s found naturally in crude oil and thus in gasoline and vehicle exhaust.
are already low levels of benzene in the air all around us due to air
pollution from motor vehicle exhaust. But now Health Canada wants to
make our homes safer.
Most Canadians know about the risks of
carbon monoxide in their homes, but many aren’t as familiar with the
risk of benzene exposure.
Deborah Schoen, the head of Health
Canada’s indoor air section, says the agency has conducted studies
measuring levels of the gas in homes across Canada. Those studies found
that the levels were generally low, whether the houses had attached
garages or not.
“On average, benzene levels in houses with
attached garages are three times higher than of other houses,” Schoen
told CTV News Channel this week from Ottawa.
Most drivers know
not to run their vehicles after entering and closing the garage. What
they may not know: after a car is turned off, the engine will continue
to emit benzene into the air as it sits in the garage.
As well, the paints and solvents that many homeowners store in their garage also emit benzene as they slowly evaporate.
Schoen says that for the most part, the risk of long-term health effect is not high.
cancer risk is extremely low. But Health Canada and the World Health
Organization and the European Commission recommend people reduce their
exposure to benzene as much as possible,” she says.
“So for this reason, Health Canada advises people to reduce benzene exposure as much as possible.”
have shown that benzene can definitely cause problems if people are
exposed to high levels over long periods of time. Workers in industrial
settings exposed to high levels of benzene have been shown to have a
much higher risk of leukemia.
Benzene is dangerous because of
the damage it can do to the blood. It causes bone marrow not to produce
enough red blood cells, while also damaging the immune system by not
creating enough white blood cells.
Thanks to regulations brought
in in the 1990s that reduced the amount of benzene in gasoline,
Canadians’ exposure to benzene has been dropping in recent decades.
But Schoen says it’s important to keep looking for ways to reduce our
exposure to the gas even further, which is why Health Canada is focusing
on the indoor air quality of homes with attached garages.
The guidelines are expected to advised homeowner to never idle a vehicle inside a garage, but to let it warm up outside.
“People might open the garage door and figure that’s enough,” Schoen said.
But even with the door open, a range of pollutants from vehicle
exhaust– not just benzene but carbon monoxide and other pollutants--
accumulate when you idle your car in an attached garage.”
For more stories on health, pollution, chemical exposure and improving your indoor air quality visit www.allerair.com or call to speak to an air quality expert about improving the air in your home 1-888-852-8247. AllerAir Air Purifiers remove 99.97% of airborne dust, particles and the chemicals and odors that other air cleaners leave behind.