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What a Bonfire does to your Lungs

Setting large piles of stuff aflame can have significant environmental and human health impacts

Open burning of any kind is generally bad for humans and the nearby environment. Compared to controlled burning, such as in boilers, large outdoor fires tend to produce “highly mutagenic and carcinogenic emissions” that can affect any humans hanging out in the vicinity. (Mutagenic chemicals, as the name suggests, are those that tend to cause genetic mutations.) The fine particles in smoke, meanwhile, can find their way into eyes and lungs and cause bronchitis, as well as aggravate existing conditions like heart and lung disease

Temperature matters. If the fire is hot enough, many of the toxic molecules will break down into simpler, less toxic ones. But open fires rarely reach those temperatures, meaning toxic molecules are released as a gas that can easily find its way into lungs and the environment. As opposed to high-temperature incinerators, bonfires also tend to produce more carbon monoxide, which is harmful when breathed in and can form toxic ozone.

From an environmental perspective, the smoke from any bonfire—including normal ones built with wood or paper—adds particulates and carbon to the atmosphere. These can act not only as air pollutants, but also as “climate forcers,” meaning they can contribute to climate change in the short or long term—albeit on a much smaller scale than industry or automobiles do. Particulate pollution can lead to lung and nose irritation, and possibly even lung cancer if exposure is severe and prolonged, according to the Centers for Disease Control

Ash from bonfires can also easily run off into rivers and lakes, introducing chemicals and possibly altering the pH of the watershed. This could cause the widespread of fish and other animals living in or near the watershed.

Burning most kinds of plastics or metals is a quick path to creating adverse health effects because of their inherently toxic molecules.

Some of the worst items to burn in terms of toxic emissions include manmade chemicals like Teflon or many plastics, used motor oil and rubber such as that found in tires. On the more natural side of things, burning poison ivy can be very harmful to people allergic to it.

Warning from Asthma UK: Bonfires could cause potentially fatal asthma attacks

The smoke fumes from burning wood can linger in the air creating localised pollution, which could cause asthma attacks for the 5.4million people in the UK with the condition, says Asthma UK. Two thirds of people with asthma say poor air quality makes their symptoms worse.

The charity advises that the smoke from bonfires could be ‘deadly’.

Are you concerned about your personal lung cancer risk? The EarlyCDT®-Lung Test  can help to assess your personal risk.

Dr Oliver Frey, MD MRCGP

IoD Ambassador Health & Wellbeing

Source: Smithsonian magazine 

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