Traffic-related air pollution causes FOUR MILLION cases of asthma each year

April 11, 2019 | 0 | pollution , Traffic-related

Four million children around the world develop asthma each year because of road traffic pollution, a major study has estimated.

Exposure to nitrogen dioxide, largely from road transport, is thought to be behind 38,000 new cases in the UK and 240,000 in the US each year.

The global research ranked the UK the 29th worst out of 194 countries for the rate of children developing asthma from traffic pollution.

The US placed 22nd while Australia came 64th, according to the study published in a prestigious medical journal.

Charities have warned the findings provide further evidence that toxic fumes are putting tens of thousands of children at risk of potentially deadly asthma attacks. 

The global research ranked the UK the 29th worst out of 194 countries for the rate of children developing asthma from traffic pollution. The US placed 22nd while Australia came 64th, according to the study published in a prestigious medical journal

Researchers found 19 per cent of asthma cases in youngsters – aged one to 18 – in the UK and US can be attributed to nitrogen dioxide pollution.

This rose to almost a third in London (29 per cent) where pollution levels are highest, according to the study published in The Lancet Planetary Health.

In the UK, there were the equivalent of 280 new cases each yer per 100,000 children – compared to 550 in Kuwait, which ranked the worst.

In comparison, the figure was 300 in the US and 190 in Australia, the team at the George Washington University found.  

Another ranking of the percentage of diagnoses linked to nitrogen dioxide exposure found South Korea came top, with nearly one third (31 per cent).

It was followed by Kuwait (30 per cent), Qatar (30 per cent), United Arab Emirates (30 per cent), and Bahrain (26 per cent).

WHAT IS ASTHMA?

Asthma is a common but incurable condition which affects the small tubes inside the lungs.

It can cause them to become inflamed, or swollen, which restricts the airways and makes it harder to breathe.

The condition affects people of all ages and often starts in childhood. Symptoms may improve or even go away as children grow older, but can return in adulthood.

Symptoms include wheezing, breathlessness, a tight chest and coughing, and these may get worse during an asthma attack.

Treatment usually involves medication which is inhaled to calm down the lungs.

Triggers for the condition include allergies, dust, air pollution, exercise and infections such as cold or flu.

If you think you or your child has asthma you should visit a doctor, because it can develop into more serious complications like fatigue or lung infections.

Source: NHS  

While India ranked low for nitrogen oxide, levels of other pollutants such as particulate matter, ozone, carbon monoxide, would be higher, the authors suggest. 

Dr Samantha Walker, of Asthma UK, said: ‘Polluted air is a major threat to public health, affecting an estimated half a million children with asthma in the UK 

‘Worryingly, this study confirms existing research which shows children breathing in toxic air from traffic fumes have stunted lung growth and are at risk of developing asthma.’

Cases of childhood asthma have increased steadily since the 1950s, making it the most common disease among children worldwide.

Experts are divided as to what actually causes people to become asthmatic, but exposure to air pollution in childhood increases the risk by damaging the lungs.

While various pollutants in traffic air pollution could be responsible, previous research suggests exposure to nitrogen dioxide could be key.

Researchers used global data on nitrogen dioxide concentration and asthma incidence to estimate the number of new cases which could be related to traffic pollution. 

The road outside Earl’s Court Underground Station in Kensington, London, is the most polluted in the country, according to Friends of the Earth’s research

POLLUTION LEVELS ILLEGAL IN MOST UK MONITORING ZONES

The UK’s air pollution was labelled a ‘national embarrassment’ in September.

Figures for 2017 showed 37 out of 43 air quality zones across the UK had illegal levels of nitrogen dioxide pollution, the same number as the previous year.

Annual average levels of the pollutant from exhaust fumes fell in most places, figures from the Government and environmental law charity ClientEarth revealed.

But levels are still more than double the legal limit in Greater London and also well over the limit in areas including South Wales, West Midlands, Glasgow and Greater Manchester.

Brighton, Worthing and Littlehampton in West Sussex – an area declared as legal in the previous year – crept up to just below the threshold again, the statistics show.

The UK has been breaching EU pollution limits for nitrogen dioxide, much of which comes from diesel vehicles, since the rules came into effect in 2010.

Air pollution causes an estimated 40,000 premature deaths a year in the UK and is linked to health problems from childhood illnesses to heart disease and even dementia. 

NHS data shows there were more than 77,000 hospital admissions for asthma last year, with an estimated 1,500 deaths.

The latest findings will be of particular concern as UK has one of the worst mortality rates in Europe, despite two-thirds being considered preventable.

Three-quarters of cases were found to be in cities, yet levels of pollutants often remained below guidelines from the World Health Organisation (WHO).

Despite regarding air pollution as ‘a major environmental risk to health’, more than nine in ten cases of asthma occurred in areas where traffic pollution levels were below the limit of 21 parts per billion.

Senior author Dr Susan Anenberg, George Washington University, said the guidelines need to be altered urgently.

She said: ‘Our findings suggest that the WHO guideline for annual average NO2 concentrations might need to be revisited, and that traffic emissions should be a target to mitigate exposure.’

The findings come the same week as London introduced an Ultra-Low Emission Zone in a bid to clean up the capital’s toxic air.

Many owners bought diesels because of tax breaks given out when they were seen as a better choice for the environment.

But now drivers of diesel cars over four years old – and most petrol cars over 13 years old – are being charged £12.50 a day to enter or move around in central London – on top of the £11.50 congestion charge.

Charities insist air pollution is blighting the lives of children across the UK, not just in London, and called on the Government to do more to cut levels.

Dr Penny Woods, chief executive of the British Lung Foundation, said: ‘We used to think the only real danger roads posed to children was the threat of a car accident.

‘However now we can see there’s an equally deadly risk; breathing in illegal levels of air pollution and getting a respiratory disease like asthma, or growing up to have smaller, weaker lungs.

‘Air pollution is invisible, so it’s easy to ignore – but studies like this make it clear toxic air is a pressing threat, and we need to act.’  

THE WORST 10 AREAS FOR AIR POLLUTION IN THE UK 

UK locations ranked by annual average level of NO2 (in ug/m3) – the objective is 40ug/m3:

1. Earls Court Station, Kensington & Chelsea, London – 129.5

2. Junction North Circular Rd/Chartley Avenue, Brent, London – 115.39

3. IKEA, Hut, North Circular Road, Brent, London – 102.1

4. Neville Street (NW Tunnel entrance), Leeds – 99

5. Fir Tree Close, Hickleton, Doncaster – 96

6. Kensington H St/Kensington Church St, London – 94.5

7. Euston Road, Camden, London – 92.45

8. Strand, City of Westminster, London – 92

9. High Street, Harlesden, Brent, London – 91.83

10. Haddon Hall, Tower Bridge Road, Southwark, London – 90.79

HOW MANY CHILDREN DEVELOP TRAFFIC-RELATED ASTHMA IN YOUR COUNTRY? 
CountryIncidenceIncidence rate* (per 100k children)Percent of total incidence
Kuwait6,10055030
United Arab Emirates9,50046030
Canada34,00045020
Taiwan20,00042021
Bahrain2,60041026
Jordan14,00041022
Lebanon7,30041023
Qatar1,30041030
Peru43,00038015
Syria27,00035019
Bolivia14,00034014
Iran75,00033022
Iraq55,00033020
South Korea36,00033031
Bermuda3932011
Chile16,00032020
Saudi Arabia32,00032024
Cuba7,40031011
Dominican Republic12,00031012
Colombia54,00030013
Singapore3,70030026
United States240,00030019
Haiti14,0002909.9
Argentina38,00028018
Japan57,00028023
Mexico130,00028019
Palestine6,50028017
Turkey67,00028019
United Kingdom38,00028019
North Korea20,00027015
Oman3,20027016
Thailand44,00027012
The Bahamas3402709.3
China760,00026019
Ecuador16,00026014
Egypt91,00026015
Paraguay6,90026010
Afghanistan43,00025015
Barbados1702508.2
Greenland3425012
Luxembourg29025017
Belize3702408.2
Venezuela24,00024014
Yemen33,00024015
Finland2,50023015
Malaysia24,00023011
Maldives33023013
Netherlands8,10023022
Philippines90,0002309.1
Brazil140,00022013
El Salvador5,50022010
Puerto Rico2,0002208.1
Belgium4,80021022
Israel5,30021020
Libya4,80021013
Sudan41,00021011
Trinidad and Tobago7002107
Vietnam60,00021013
Algeria28,00020012
Belarus3,60020018
Cambodia13,0002009.8
Jamaica1,8002007.4
Angola24,0001909.1
Australia10,0001909.4
Costa Rica2,9001908.5
Guyana5401906.8
Sweden3,80019014
Uruguay1,70019012
Djibouti64018011
France26,00018017
Honduras6,2001809
Indonesia160,0001808.3
Mauritania3,50018010
Mongolia1,80018018
Myanmar33,00018010
Russian Federation50,00018018
South Africa34,0001809.4
Uzbekistan20,00018016
Germany23,00017019
Guatemala13,00017010
Namibia1,8001709.3
Portugal3,20017013
Spain14,00017016
Tunisia5,30017011
Turkmenistan3,20017018
Austria2,50016015
Cyprus39016016
Estonia40016014
Kyrgyzstan3,50016015
Laos4,8001608.1
Latvia57016014
Morocco18,00016011
Poland12,00016016
Suriname2801605.2
Armenia1,10015015
Botswana1,3001508.4
Eritrea3,9001509
Iceland12015012
Ireland1,7001509
Lithuania84015015
Niger16,00015011
Panama2,1001506.7
Switzerland2,40015014
Ukraine12,00015013
Antigua and Barbuda381405
Burkina Faso13,0001409.1
Czech Republic2,60014016
Denmark1,80014013
Greece2,60014014
Kazakhstan7,60014017
Norway1,60014013
Pakistan120,00014016
Romania5,10014012
Serbia1,70014012
Somalia8,1001408.2
Tajikistan5,00014014
Lesotho1,1001307.6
Malta10013011
Nigeria110,0001308
Swaziland7801306.2
Virgin Islands, U.S.341304.4
Andorra1412011
Azerbaijan3,50012013
Chad9,4001208.7
Georgia1,00012012
Nicaragua3,4001207.2
Senegal8,60012010
Timor-Leste6501205.4
Congo2,2001106.5
Croatia89011012
Hungary2,00011014
Italy12,00011015
Macedonia51011012
Mali9,8001109.4
Moldova1,20011011
New Zealand1,2001105.3
Slovakia1,10011012
Sri Lanka6,9001105.6
Bulgaria1,20010011
Dominica271003.7
The Gambia1,0001007.1
Slovenia3409711
South Sudan5,800955.5
Brunei120948.1
Papua New Guinea3,000933.5
Zimbabwe6,800926
Bosnia and Herzegovina6809010
Tanzania24,000904.2
Cameroon9,900876.9
Togo2,900855.9
Montenegro120848.9
Mozambique12,000844.3
Zambia7,000845.7
Madagascar9,800834.3
Bangladesh52,0008212
Equatorial Guinea300824.2
Democratic Republic of the Congo32,000813.9
Albania6207911
Benin4,300785.6
Malawi6,700784.5
Nepal9,000769.9
Saint Lucia42762.8
Ethiopia38,000745.1
Central African Republic1,600723.8
India350,0007214
Cote d’Ivoire7,600714.8
Gabon540703.5
Cape Verde140685.6
Guinea4,200674.1
Ghana7,700645.6
Kenya14,000644.1
Rwanda3,500632.9
Guinea-Bissau540604.4
Saint Vincent and the Grenadines19572
Grenada20551.8
Burundi2,800512.9
Bhutan150466.8
Uganda9,200442.5
Sierra Leone1,300423
Mauritius120361.8
Solomon Islands90341.3
Comoros120331.6
Liberia450211.6
Vanuatu16130.52
Federated States of Micronesia36.40.26
Sao Tome and Principe33.30.25
Seychelles00.000784.00E-05
American Samoa000
Guam000
Kiribati000
Marshall Islands000
Northern Mariana Islands000
Samoa000
Tonga000

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