Increased air pollution cuts victims' lifespan by a decade, costing billions

July 3, 2017
Credit: CC0 Public Domain

One of the benefits to cutting fossil fuel consumption is lowering air pollution. A new study in the August issue of Ecological Indicators shows that, on average, an increase in pollution particles in the air of 10 micrograms per cubic meter cuts victims' life expectancy by 9-11 years - more than previously thought. But the estimated economic cost of this differs wildly between the US and the EU because of the calculations used.

The author of the study, Prof. Mikael Skou Andersen of Aarhus University in Denmark, says we need a robust and consistent way of determining the economic benefit of reducing to produce compelling data that encourages countries to reduce their use of .

When we burn fossil fuels, tiny particles are released, causing air . This is known to cause premature death, and policies that aim to reduce our consumption of fossil fuels often cite the potential health benefits - and related cost savings - linked to reducing air pollution.

But calculating the costs associated with caused by air pollution is complex and has resulted in very different estimates: because of the different methodologies used, the cost of air pollution related to fossil fuel consumption is estimated to be three times higher in the US than the EU.

"The existing literature is ambiguous and there are differences in the approaches adopted in EU and USA for how to account for such costs," commented Prof. Andersen. "People are willing to pay a price to reduce risks for dying prematurely, provided we have an understanding of the implications and magnitudes of such risks."

In the US, the cost-benefit analysis of reducing air pollution is calculated based on the number of lives saved, with each life currently estimated to be worth $7.4 million. But in Europe, the focus is on the change in : most of the victims of air pollution-related deaths are in their 70s and 80s, so the number of life years lost is thought to be only one or two. This leads to a much lower cost estimate.

To work out a more accurate figure, Prof. Andersen used a lifetable of 100,000 people with an age distribution that matches the current population, which showed estimated mortality rates by age. He determined the number of people expected to survive for their remaining lifetime in each age group and totaled this to give the total number of expected life-years. He then simulated the effect of long-term exposure to increased air pollution (of 10 micrograms of small particles per cubic meter) on mortality.

The result revealed the average age of an air pollution victim is 78.9 years and their average loss of life expectancy is 9-11 years - much longer than a frequently cited estimate of 1-2 years. For comparison, the estimated loss of life years to traffic fatalities is 35-40 years. Dr. Andersen hopes that this information will inform international institutions and policy makers that want to accurately account for deaths caused by air pollution due to .

"There is concern about air pollution and its health impacts, more so following 'diesel-gate'," said Prof. Andersen. "But many European countries are unable to meet the they have agreed to in the European Union. We need to understand the true impact of long-term exposure to air pollution to develop better informed policies and reduce fossil ."

Explore further: Study reveals amount of premature deaths linked to international trade

More information: Mikael Skou Andersen, Co-benefits of climate mitigation: Counting statistical lives or life-years?, Ecological Indicators (2017). DOI: 10.1016/j.ecolind.2017.03.051

Related Stories

Exercise can outweigh harmful effects of air pollution

March 30, 2015

New research from the University of Copenhagen has found that the beneficial effects of exercise are more important for our health than the negative effects of air pollution, in relation to the risk of premature mortality. ...

EU: Air pollution could reduce life by almost two years

March 2, 2011

Curbing air pollution in major European cities could save 19,000 lives per year, add almost two years to local life expectancy and save 31.5 billion euros (43.4 billion dollars) in health costs and work absenteeism, an EU-funded ...

Recommended for you

Sunlight stimulates microbial respiration of organic carbon

October 17, 2017

Sunlight and microbes interact to degrade dissolved organic carbon (DOC) in surface waters, but scientists cannot currently predict the rate and extent of this degradation in either dark or light conditions. A recent study ...

New study finds nature is vital to beating climate change

October 16, 2017

Better stewardship of the land could have a bigger role in fighting climate change than previously thought, according to the most comprehensive assessment to date of how greenhouse gas emissions can be reduced and stored ...

Waves in lakes make waves in the Earth

October 16, 2017

Beneath the peaceful rolling waves of a lake is a rumble, imperceptible to all but seismometers, that ripples into the earth like the waves ripple along the shore.

0 comments

Please sign in to add a comment. Registration is free, and takes less than a minute. Read more

Click here to reset your password.
Sign in to get notified via email when new comments are made.