Growing up in air-polluted areas linked to mental health issues

Posted on September 3, 2019 by Respro® UK Ltd

Correlation found between poor air quality and disorders including schizophrenia

People who spend their childhood in areas with high levels of air pollution may be more likely to later develop mental disorders, research suggests.

Air pollution has become a matter of growing concern as an increasing number of studies have found links to conditions ranging from asthma to dementia and various types of cancer.

There are also signs it may take a toll on mental health. Research published in January found that children growing up in the more polluted areas of London were more likely to have depression by the age of 18 than those growing up in areas with cleaner air.

But a study by researchers in the US and Denmark has suggested a link between air pollution and an increased risk of mental health problems, including bipolar disorder, schizophrenia and personality disorders.

Between 1% and 2% of the UK population have bipolar disorder in their lifetime, with similar figures for schizophrenia. It is estimated that about 5% of people in the UK have a personality disorder at any one time.

Prof Andrey Rzhetsky, a co-author of the research at the University of Chicago, said the team carried out their work after finding that genetics did not fully explain why some people experienced these conditions and others do not.

Writing in the journal PLOS Biology, Rzhetsky and colleagues explained how they used a rather crude approach when they first examined possible links to air pollution. Insurance data for 151 million individuals collected between 2003 and 2013 was used to explore the rates of particular mental disorders in counties across the US. This was then analysed alongside the average level of air pollution in each county.

The team found the rate for bipolar disorder was 27% higher for counties in the bottom seventh for air quality compared with those in the top seventh (with the best air quality), once factors including age, sex, poverty levels in the county and average income were taken into account. A tentative link was also seen for depression and air pollution.

However, this analysis was based on average air pollution levels over very large areas. What’s more, the rates of psychiatric conditions may not reflect the situation for low-income individuals who may be less likely to have insurance.

The team then looked at air pollution data from Denmark, which was collected on a scale of 1 sq km.

They looked at air pollution exposure for the first 10 years in the life of 1.4 million individuals born and living in the country between 1979 and the end of 2002, as calculated from their home addresses. Levels of 14 pollutants were considered – compared with the 87 considered in the US part of the study – and used to provide a measure of overall air pollution exposure over those years.

The team then explored subsequent diagnoses for bipolar disorder, schizophrenia, personality disorder and depression up to the end of 2016.

Once factors including age, sex and socioeconomic status were considered, the team found that the rate of all four mental disorders were higher among people who had greater exposure to overall air pollution during their childhood.

When participants were split into seven equal-sized groups, based on the air they were exposed to until the age of 10, the researchers found the bottom seventh (who experienced the worst air) had 29%, 148%, 51% and 162% higher rates for bipolar, schizophrenia, depression and personality disorder respectively than the top seventh (who had experienced the cleanest air).

The team suggested a number of explanations for how mental health is affected by air pollution, pointing to animal studies that had proposed one route could be that it triggered inflammation in the respiratory tract that then led to inflammation across the body, including the brain. Another suggestion was that air pollutants travelled from the nose to the brain where they accumulated, causing inflammation and damage.

If the links to mental health disorders are confirmed, they could – somewhat counterintuitively – offer some cause for hope. “Unlike genetic predisposition, environment is something we can change,” said Rzhetsky.

However, the research has limitations: the findings do not prove that air pollution drives the development of these conditions, while the analyses do not take into account the influence of many factors known to affect mental health, including family history of psychiatric problems or bullying.

Dr Ioannis Bakolis, an expert in biostatistics from King’s College London, said the study added to previous evidence of a possible link between air pollution and mental health disorders.

“While causation cannot be proved, this work suggests substantial morbidity from mental disorders could be avoided with improved air quality,” he said.

Bakolis added that there was already plenty of evidence that air pollution can hurt many other aspects of health, adding that measures such as car-free zones in cities should be given attention.

A second study, published in the Journal of Investigative Medicine, has revealed a link between long-term exposure to traffic fumes and age-related macular degeneration (ARMD) – one of the leading causes of vision problems in older people.

The researchers used national health insurance data from 2000 to 2010 for almost 40,000 people aged 50 or older in Taiwan, together with air quality data from 1998 to 2010 centred on the location of the health centre people visited for help with an illness like a cold.

The team found that patients visiting centres in the highest 25% for nitrogen dioxide levels had almost twice the risk of developing ARMD than those who visited centres in the bottom quartile. A similar link was seen for carbon monoxide pollution. However, several other factors including family history of the condition were not considered in the work, while the data might be skewed by people having less chance of a respiratory infection in less polluted areas.

via Growing up in air-polluted areas linked to mental health issues | Society | The Guardian

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Economists Find First Link Between Early Childhood Exposure to Air Pollution and Later-Life Arthritis

Posted on September 2, 2019 by Respro® UK Ltd

A recent study by economists at the University of Massachusetts Amherst has – for the first time – found a link between exposure to air pollution during early childhood with the development of arthritis later in adult life.

Jamie Mullins, assistant professor in the department of resource economics at UMass Amherst, found that those who were exposed to the 1952 Great Smog of London during their first year of life had a 23.4 percentage point higher incidence of arthritis later in life than those not exposed as infants by virtue of their birth dates and/or the locations of their residence in early life. This increase represents a doubling of the arthritis rate among the exposed population. The higher arthritis rates among those exposed to the Smog in the first year of life are clearest for rheumatoid arthritis (RA) – a 14.9 percentage increase – versus osteoarthritis, which saw a 9.5 percentage point increase.

“These findings are important today, as millions of people continue to be exposed to episodes of extreme air pollution each year. In fact, the World Health Organization estimates that 91% of the world’s population lives in areas that experience unhealthy levels of air pollution,” Mullins says.

The report, “Arthritis diagnosis and early-life exposure to air pollution,” was co-authored with Andrew Shepherd, a 2018 UMass Amherst resource economics master’s degree recipient, and was published in the journal Environmental Pollution. The study is one of the first to link early life exposure to air pollution with medical conditions much later in life and the first to do so for arthritis, which is estimated to afflict 54.4 million American adults – nearly 23% of the adult population.

Air pollution is currently implicated in some 7 million deaths per year, but such tallies only take account of deaths from issues related to the respiratory and circulatory systems. According to Mullins, their new results “show that a wider set of physiological systems are harmed by air pollution exposure than is generally considered. This suggests that many more health issues and deaths are likely impacted by air pollution than are currently accounted for.”

The Smog that blanketed London from December 5-9, 1952, was caused by an unexpected temperature inversion, which trapped emissions from the city’s coal-burning heating stoves and diesel-powered buses near ground-level. The resulting ambient pollution mixed with moisture to form a thick, foul-smelling fog that disrupted life in the city and ultimately led to as many as 12,000 deaths in the four months following the event.

The authors interpret their results as causal effects of the Smog, saying that “estimates are identified through the difference in outcomes between groups that are effectively randomly determined by time and place of birth,” and that “any plausible alternative explanation for our results would need to have impacted only London, contemporaneous (or nearly so) to the Smog, and drive higher incidences of arthritis, and especially of RA. We are unable to identify any candidate factors or events that meet these criteria.”

The researchers fear that their results imply that the health effects of poor air quality have likely been dramatically underestimated because such effects continue manifesting for decades after exposure and extend beyond cardiopulmonary issues.

“While the pollution mixture of the Great Smog differs from the pollution mixtures of other places and times, the continued combustion of coal and diesel globally suggests parallels are likely to exist between the Great Smog and today’s worst pollution events,” they conclude. “More work is needed to map the mechanisms through which air pollution taxes health over both the short and long terms in order for the full costs of pollution to be better understood and addressed. We hope that the findings of this article will contribute to more complete assessments of the costs of air pollution and potentially aid medical clinicians and researchers seeking to understand, diagnose, and treat arthritic diseases.”

The complete report, “Arthritis diagnosis and early-life exposure to air pollution,” is available via ScienceDirect.

via Economists Find First Link Between Early Childhood Exposure to Air Pollution and Later-Life Arthritis – ScienceBlog.com

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NASA detects huge carbon monoxide plume from Amazon rainforests

Posted on August 28, 2019 by Respro® UK Ltd

Carbon monoxide is a pollutant that can persist in the atmosphere for about a month and has implications for both air pollution and climate change

nasaImage: NASA/JPL-Caltech

NASA has detected a giant plume of carbon monoxide from fires in the Amazon rainforest.

New data from its Atmospheric Infrared Sounder (AIRS) technology, aboard the Aqua satellite, shows movement in the atmosphere of carbon monoxide associated with fires in the Amazon region of Brazil from 8th August to 22nd August 2019.

Fires have been raging across the world’s largest tropical rainforest, one of the most important carbon sinks.

Carbon monoxide is a pollutant that can be transported large distances and persist in the atmosphere for about a month and has implications both for air pollution and climate change.

NASA’s time series maps carbon monoxide at an altitude of 18,000 feet and shows the plume growing in the northwest Amazon region, before drifting in a “more concentrated plume” towards the southeastern part of the country.

It says while the gas has little effect on the air people breathe at the high altitude mapped in the images, strong winds can carry it downward to where it can significantly impact air quality.

Green in the image indicates concentrations of carbon monoxide at approximately 100 parts per billion by volume (ppbv), yellow at around 120ppbv and dark red at 160ppbv but NASA notes the local values can be significantly higher.

Prime Minister Boris Johnson has pledged to provide £10 million towards helping the Amazon rainforest following the recent surge in fires.

via NASA detects huge carbon monoxide plume from Amazon rainforests – Energy Live News

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Pollutionwatch: how LA beat the ‘blight on the land of sunshine’

Posted on August 17, 2019 by Respro® UK Ltd

Decades before a Greenpeace warning on smog in Asia, LA found a novel way to tackle the problem

Many Asian cities are facing new air pollution challenges and are struggling to stem smog emergencies. According to a recent study by Greenpeace, 22 of the world’s 30 most polluted cities are in India.

In 1954, Los Angeles became one of the first cities to address smog, described by one local newspaper as a “blight on the land of sunshine”. Fearing an event similar to the Great Smog of London in 1952, which killed more than 4,000 people, authorities in the Californian city devised an emergency plan.

While modern-day air pollution warnings in the UK advise vulnerable people to protect themselves, decades earlier LA installed a system to quickly shut local pollution sources if one of its frequent eye-stinging smogs spiralled out of control.

Monitoring stations were constructed and, in an age before the internet, scientists telephoned their results to a control centre every hour. Alerts were then sent through teleprinters in the sheriff’s office, as well as press wires and dedicated radios in the city’s factories.

The new Sigalert system was employed too, which left a recorded message in each radio and television station and, just like the Batphone, activated a light and buzzer to notify broadcasters to interrupt programming. Meanwhile, industries would lower boilers and activate carpooling schemes, while residents were asked to drive less and stop burning rubbish. Nightly weather forecasts used a red/green smog warning system, leading to the myth that LA had multicoloured smog.

via Pollutionwatch: how LA beat the ‘blight on the land of sunshine’ | Environment | The Guardian

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Amazon fires generate smoke cloud almost as big as devastating Siberia blaze

Posted on August 15, 2019 by Respro® UK Ltd

While fires in Siberia have created a cloud of smoke larger than the European Union, on the other side of the world, forest blazes in the Amazon are causing a phenomenon of almost the same magnitude.

Santiago Gassó, a researcher at NASA’s Goddard center, warned on his Twitter account on Tuesday that the surface of Latin America covered by the smoke layer was about 3.2 million square kilometers.

That compares to the area of ​​smoke caused by fires in Siberia (7 million square kilometers) and the area of the EU (4,476 million square kilometers).

Scientists point out that these extensive layers of smoke affect the local weather.

Gassó explained that smoke “not only prevents solar energy from reaching the earth”, but also inhibits the formation of clouds.

A study published in Science in 2004 demonstrated the effect between urban air pollution and smoke from fires in reducing cloud formation, which results in warming of the atmosphere and cooling of the surface.

“Smoke over clouds can be particularly important when you think about the weather,” Finnish Meteorological Institute researcher Antti Lipponen explained to Euronews. “The smoke absorbs solar radiation that would otherwise be reflected back into space by clouds, but now some of the radiation is not reflected due to smoke.”

The Brazilian state of Amazonas declared a state of emergency last week due to the increasing number of fires in the region.

Fires in the Rondonia nature reserve, bordering the Amazon, have been active for more than 15 days.

“The fire has exceeded the limits of the unit and reaches the neighboring pastures, endangering the survival of the animals and compromising the health of the farmers,” says Brazil news portal EBC.

via Amazon fires generate smoke cloud almost as big as devastating Siberia blaze | Euronews

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Smoke from blazes led to major air pollution in Athens

Posted on August 15, 2019 by Respro® UK Ltd

The high concentrations of airborne microparticles in the atmosphere of the Greek capital due to the large wildfire that raged across the island of Evia had dropped Wednesday from the levels observed on Tuesday, according to the director of the Institute for Environmental and Sustainable Development Research, Nikos Michalopoulos.

Speaking to the Athens-Macedonian News Agency (ANA-MPA) on Wednesday, Michalopoulos said that Tuesday was “a difficult day” with high concentrations of airborne particles almost everywhere in the Attica basin.

“Today, the situation is much better. There is a clear improvement. Levels are down by about 50 percent,” he said.

Michalopoulos added however that levels of airborne microparticles remain relatively high. Before the Evia fire started, concentrations were at 15-20 micrograms per cubic meters, but that figure had jumped to 80-90 mg/m3 by Tuesday noon.

“Today levels are clearly lower, at 30-40 mg/m3. Levels on Tuesday were four to five times higher than usual for August and they they are now twice as high.”

via Smoke from blazes led to major air pollution in Athens | News | ekathimerini.com

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Microplastics ‘significantly contaminating the air’, scientists warn

Posted on August 15, 2019 by Respro® UK Ltd

Abundant levels of microplastic pollution have been found in snow from the Arctic to the Alps, according to a study that has prompted scientists to warn of significant contamination of the atmosphere and demand urgent research into the potential health impacts on people.

Snow captures particles from the air as it falls and samples from ice floes on the ocean between Greenland and Svalbard contained an average of 1,760 microplastic particles per litre, the research found. Even more – 24,600 per litre on average – were found at European locations. The work shows transport by winds is a key factor in microplastics contamination across the globe.

The scientists called for research on the effect of airborne microplastics on human health, pointing to an earlier study that found the particles in cancerous human lung tissue. In June, another study showed people eat at least 50,000 microplastic particles per year.

Many millions of tonnes of plastic are discarded into the environment every year and are broken down into small particles and fibres that do not biodegrade. These particles, known as microplastics, have now been found everywhere from high mountains to deep oceans and can carry toxic chemicals and harmful microbes.

The latest study was led by Dr Melanie Bergmann of the Alfred Wegener Institute for Polar and Marine Research in Germany. She said: “We really need research on the human health aspect. There are so many studies being published now on microplastics but nothing on human health, and that is really strange in my opinion.” Bergmann added that microplastics should be included in air pollutant monitoring schemes.

Bergmann had previously found 12,000 microplastic particles per litre in samples of Arctic sea ice: “So we asked where does it all come from?” Some is carried from populated regions by ocean currents, but analysis of snow samples shows much is blown by the wind.

“Microplastic concentrations in snow were very high, indicating significant contamination of the atmosphere,” concluded the study published in the journal Science Advances.

“It basically gets everywhere with the wind,” said Bergmann. Pollen and dust from the Sahara are already known to be blown over long distances. As well as the Arctic ice floes, the team’s 22 samples included snow from Svalbard, an island well north of the Arctic circle, the German and Swiss Alps and the city of Bremen.

The team found that the smallest particles were the most abundant, but their equipment could not detect particles smaller than 11 microns.

“I am convinced there are many more particles in the smaller size range beyond our detection limit,” said Bergmann. “The worry with smaller particles is they can be taken up by a greater range of organisms and, if they reach nano-scale, they could penetrate cell membranes and translocate into organs much more easily than the larger fraction.”

Microplastics from polymer-based protective coatings on vehicles, buildings and ships were the most common of those frequently found by the researchers, followed by rubber, polyethylene and polyamides including nylon.

The researchers cite a 1998 study as the only assessment of microplastic in human lungs. It found inhaled fibres were present in cancerous lung specimens and concluded: “These bioresistant and biopersistent plastic fibres are candidate agents contributing to the risk of lung cancer.”

The European commission’s chief scientific advisers said in a report in April: “The evidence [on the environmental and health risks of microplastics] provides grounds for genuine concern and for precaution to be exercised.”

Scientists not involved in the latest study expressed concern that supposedly pristine ecosystems such as the Arctic were contaminated.

“The work is very important because it strengthens the argument for much more stringent regulations on the plastics industry and forcing the governments of the world to address the issue of plastic pollution,” said Steve Allen, at the EcoLab research institute in France. “With [microplastics] pouring into our environment, it is highly likely we will only find out the safe levels after we have exceeded them.”

An earlier study published by Allen in April found significant microplastic quantities falling from the air in the Pyrenees, also implicating wind as a transport mechanism. The Bergmann-led research, however, is the first to look the contamination of snow.

Just two previous studies have looked at the presence of microplastics in the air, one in Paris, France, and another in Dongguan, China. Both found a steady fall of particles. Other recent research has found microplastics raining down on the Rockies in North America and in farmland soils near Shanghaiin China.

via Microplastics ‘significantly contaminating the air’, scientists warn | Environment | The Guardian

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Air quality in Miri remains at hazardous level at on noon today

Posted on August 14, 2019 by Respro® UK Ltd

The air quality in Miri, Sarawak continues to be at hazardous  level as of noon today.

According to Malaysian Air Pollution Index (APIMS) data, an  Air Pollutant Index (API) reading of 361 was recorded at an air surveillance station located at the Miri Industrial Training Institute (ILP) while another station in Miri registered an unhealthy reading of 126.

At Sekolah Kebangsaan (SK) Kuala Baram 2, Miri the API reading dropped to very unhealthy level of 270 as compared to 307 as at 1pm yesterday.

Air quality in Sri Aman rose to very unhealthy level at 245 compared to the average API readings of between 101-200  yesterday.

An update of the haze situation across the country showed one area registered hazardous API reading, two areas registered very unhealthy level, one at unhealthy level while 63 areas recorded moderate API readings.

The Air Pollution Index (API) reading of 0-50 shows good air quality; 51-100 (moderate); 101-200 (unhealthy); 201-300 (very unhealthy) and over 300 (hazardous).

The public can refer to the Department of Environment (DOE) website or download the MyIPU smartphone app on ‘Google Play’ to get hourly API readings.

via Air quality in Miri remains at hazardous level at on noon today | Malaysia | Malay Mail

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