Fresno CA residents asked to reduce pollution, clear air

Fresno-area officials are asking San Joaquin Valley residents to tamp their output of daily pollution to help improve air quality.

The particulate matter in the air climbed Friday and reached the red level — the fourth-highest ranking out of five — overnight in parts of the Valley, according to real-time readings from the San Joaquin Valley Air Pollution Control District.

Community-based sensors from Purple Air showed air pollution Saturday that the company said could have effects on people exposed for an extended time, especially those who have other respiratory conditions. Those readings tended to be worse the farther south the sensors were in Fresno.

Residents can help improve air quality by refraining from burning and reducing their trips in gas-powered cars, according to Samir Sheikh, the district executive director and air pollution control officer.

“We’re now moving from what has been another bad wildfire season where we all unfortunately had to experience very concentrated wildfire smoke for extended durations,” he said. “We are entering into the winter season that is historically the high … particulate matter season for the San Joaquin Valley.”

Sheikh said wood burning should be left to only those who have no other source of heat during the coldest months.

Early in October, the wildfires burning in the state made Valley air smoky and too dangerous for extended exposure, according to the district.

Fresno and the Valley saw some wet weather last week and then a significant storm Monday, which were helpful for cleaning the air and moving pollution out of the area, according to meteorologist Jim Blagnall with the National Weather Service in Hanford.

Since then a high pressure system has left the air stagnant, which creates conditions that put a sort of lid on the Valley and traps bad air, he said. Day-to-day pollution, dust and other matter continues to be pushed into the air.

The kind of weather that could help will likely miss Fresno to the north on Monday, but another low pressure system seems to be on the way about Thursday or Friday, he said.

Real-time air quality by ZIP code is also available at myRAAN.com.

Valley residents can participate in the Burn Cleaner incentive program and receive as much as $3,000 to upgrade older, higher-polluting wood stoves and open-hearth fireplaces to natural gas devices. To participate in that program visit valleyair.org/burncleaner.

Fresno CA residents asked to reduce pollution, clear air | The Fresno Bee

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UTEP study: El Paso hospitalizations increased after heavy dust days

High winds carrying dust across the Borderland is a common occurrence in the Chihuahua Desert. But what some might pass off as a temporary inconvenience could have long-term health consequences, a recent study found. 

A journal article published in “atmosphere” found a correlation between dust events and increased hospital admissions in El Paso. The number of patients admitted to hospitals increased from the day of a dust event to up to one week later. Increased hospital admissions after dust events were documented for conditions including coronary artery disease and Valley fever.

Estrella Herrera-Molina, who recently completed a PhD in Environmental Sciences and Engineering at UTEP, is the article’s lead author. Thomas Gill and Gabriel Ibarra-Mejia of UTEP and Soyoung Jeon of New Mexico State University are coauthors. 

The authors encourage individuals, public agencies and employers, especially of outdoor workers, to heed air pollution and dust warnings to mitigate health risks. Dust events are on the rise in the Southwest, a trend that experts expect to continue as the climate changes. 

Public health research is personal for Herrera-Molina

Born in Parral, Chihuahua, Herrera-Molina’s family moved to Juárez when she was a child. She immediately noticed the powerful dust storms that would envelop the city, where many roads are unpaved.

After undergrad at the Autonomous University of Chihuahua, Herrera-Molina completed her master’s degree at UTEP. While dust storms are commonplace in the desert, Herrera-Molina saw a gap in scientific understanding of their impact when it came time to begin her PhD research. 

“There are many studies of the impacts of air pollution from anthropogenic (human) sources,” Herrera-Molina said. “But there are few studies on the impacts of the natural air pollution.” 

Herrera-Molina wondered if health problems among her family members could be linked to the region’s high levels of air pollution.

In the El Paso-Juárez area, dust is one of the main sources of PM10, fine particulate matter that enters the lungs and bloodstream according to the Environmental Protection Agency (EPA). PM10 levels in the region are frequently above levels recommended by the EPA.

Hospitalizations for a range of conditions follow dust storms

The researchers collected data from 2010 to 2014, finding that El Paso residents were exposed to dust events an average of 15 times a year. Each event lasted about two hours.

The researchers obtained hospitalization data from the Texas Department of State Health Services and used a regression model to determine the association between the dust and wind data and hospital admissions. They found a statistically significant increase in hospitalizations for numerous conditions from the day of the dust event to a week later.

Valley fever, a respiratory infection caused by a fungus found in dust, topped the list. While there were few hospitalizations overall for Valley fever, the rate increased significantly after dust events. While the state of Texas does not track the condition, case rates are on the rise in Arizona, New Mexico and California.

Symptoms of Valley fever usually appear at least one week after exposure, but the authors speculate that exposure to increased wind could cause fast development of symptoms, or exacerbate an infection that previously had not been detected.

Dust events also were linked to hospital admissions for coronary atherosclerosis, or coronary artery disease. Other studies have found that even just a few hours of exposure to PM can cause trigger cardiovascular problems. The Centers for Disease Control and Prevention warn that exposure to air pollution increases the risk of heart attacks and coronary artery disease.

“The immune system tries to engulf the particle,” Herrera-Molina said. “If there is already plaque in your veins and then these particles come into your veins it exacerbates the problem.”

Other correlations in the data were more surprising, like the increase in hospital admissions for births following dust events. Other scientific studies have found links between air pollution and premature births and low birth weight.

“It’s important to inform (expecting) moms not to be exposed to these dust events because it could affect your baby,” said Herrera-Molina. “One, two, three weeks before your delivery date, it can affect your due date.”

2011 study by UTEP researchers found that dust and wind events in El Paso were associated with increased odds of hospitalization for asthma and bronchitis among all ages. Rates were even higher for children, especially girls. The study found that adults on Medicaid or without health insurance had higher risks of hospitalization for asthma and acute bronchitis after dust events.

Protect yourself from dust and air pollution

The National Weather Service El Paso issues alerts for high wind and dust conditions. The Texas Commission on Environmental Quality (TCEQ) publishes a daily Air Quality Forecast.

Herrera-Molina said the next steps of research are to understand how age, gender, health insurance status and other factors impact risk. 

She said researching dust events has informed her own habits.

“I changed the windows and the doors at my house. Because I realized I could get a lot of dust inside the house,” she said. “My kid has asthma, my husband has circulatory problems. I don’t want them to get sick.”

UTEP study: El Paso hospitalizations increased after heavy dust days

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Air pollution levels and rise of childhood asthma cases linked

A new report by Asthma UK and the British Lung Foundation has found that more than a quarter of a million children are born in highly polluted areas, all with pollution levels that exceed the World Health Organisations recommendations set out in 2005.

Nearly a third of all hospitals in England are in areas which exceed the recommended pollution levels, including Queen Elizabeth Hospital Birmingham and Birmingham City Hospital where air pollution levels are the highest outside of London.

Birmingham has the highest birth rates in the UK with a vastly growing population of over 2.6 million, making it the second largest city in the UK.

Research has produced evidence which suggest there is a strong correlation between air pollution and organ damage, particularly in children who are more vulnerable to developing asthma due to their faster breathing rate.

According to the NHS 1 in 11 children are living with asthma in the UK, also making up nearly a third of all paediatric hospital admissions.

“It is a national shame that a quarter of a million babies are born breathing toxic air every year” Sarah Woolnough- Chief Executive of Asthma UK and the British Lung Foundation

Currently, it costs the NHS around £1bn to care for asthma sufferers, providing treatments such as prevention Inhalers and relieve inhalers.

It is estimated that there are 36,000 premature deaths a year caused by toxic air.

The charity is asking for the UK Government to address air pollution sooner rather than later and put it at the forefront of the fight against climate change.

The new research comes ahead of next week’s UN Climate Change conference which will be held in Glasgow.

Chief Executive of Asthma UK and the British Lung Foundation, Sarah Woolnough, said: ‘It is a national shame that a quarter of a million babies are born breathing toxic air every year. How can it be acceptable that the first breath a baby takes could be so dirty it could seriously affect their long-term health? Every child deserves the best start in life and our government needs to act now to cut air pollution levels and do their duty to protect future generations from this invisible threat’.

‘The UK Government must blaze a trail, not just at COP26 but beyond, to bring in bold new clean air laws and set ambitious targets to clean up the air by 2030. If people are encouraged to swap their car for cleaner modes of transport and Government invests in more cycle routes, more frequent bus routes and if local councils expand clean air zones, there is hope that we can tackle air pollution, and all enjoy cleaner air’.

Air pollution levels and rise of childhood asthma cases linked | National Health Executive
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Baby born in area with ‘dangerously polluted air’ every two minutes in UK, study finds

Every two minutes in the UK a baby is born in an area with “dangerously polluted air”, a study has found.

More than 250,000 babies are being born in toxic air hotspots every day, according to analysis by the Asthma UK and British Lung Foundation.

The charities have called upon the Government to end the “national shame” of air pollution and put improving air quality at the heart of its ‘levelling-up’ agenda.

More than a quarter of a million children were born in areas where levels of toxic pollutant PM2.5 exceeded World Health Organisation recommendations in 2019, a report revealed.

The top 20 most heavily polluted local authority areas in England are all based in London, according to research.

Newham Council topped the charts as having the worst levels of air pollution followed by the City of London and Waltham Forest councils.

This was followed by Westminster, Islington, Barking and Dagenham, Kensington and Chelsea, Hackney and Tower Hamlets.

David Smith, 50, from Wandsworth, south west London, is among those who say they have been affected by poor air quality in the capital.

Mr Smith and his partner kept a diary to track her medical history. He said they soon saw a correlation between Esme’s breathing difficulties and the high levels of pollution where they live.

He said: “If we took her out at a really busy time when there was traffic idling on the street, and lots of buses and lorries on the road, Esme’s breathing difficulties would always become much worse.”

After several episodes of severe respiratory distress, the doctors agreed to treat Esme as a toddler with reliever and preventer inhalers which Mr Smith administered.

He added: “Esme’s worst episode was when she was about five months old, and she became horribly quiet as every breath was difficult. I got her straight to hospital, where she was treated with a nebuliser. Fortunately, she wasn’t admitted but it was frightening watching her having to struggle for each breath.”

Mr Smith said his daughter’s breathing deteriorates when she is near heavy traffic, causing him to think “air pollution is her greatest trigger”.

He added: “The pandemic has taught us the importance of looking after our lungs, but it hasn’t resulted in cleaner air for everyone. There has been a push for more cycling and walking routes, but all this has done is to clear traffic from quieter streets and to push it onto main roads.

“This just penalises poorer children and those from ethnic minorities as they are far more likely to live in inner city areas or on busy main roads.”

Lauren Pruen, 37, had to move out of the capital because of air quality.

Up until two years ago she lived in Crouch End with her two children Sacha, five, Jacob, three, and husband Shaun.

While living in north London, Mrs Pruen’s eldest son Sacha was hospitalised 10 times with breathing difficulties.

The family were informed Sacha, then 18 months old, may need to be admitted to intensive care but his condition later stabilised.

Mrs Pruen described it as “the most terrifying experience of my life”.

Her son continued to have breathing problems until the family decided to make the move to Winchester in 2019 where they have now seen a marked inprovement in his health.

Mrs Pruen said: “Crouch End where we lived might look like a leafy village but there were big main roads everywhere full of diesel buses and articulated lorries.

“The pollution was so bad from the busy street outside that the cream curtains we had hanging in the window kept turning grey, no matter how many times I cleaned them.

“Knowing that Sacha could be struggling to breathe and hospitalised made me incredibly anxious all the time. I couldn’t relax and was terrified for his long-term health.”

She added: “I knew the bad quality of air in London was making them so much worse. We just had to move out.”

Nearly one third (29 per cent) of hospitals in England are located in polluted areas which exceed the WHO’s guidelines.

Asthma UK and the British Lung Foundation have called on the Government to bring in bolder clean air laws with targets which will be met by 2030.

Sarah Woolnough, Chief Executive of Asthma UK and the British Lung Foundation, said: “How can it be acceptable that the first breath a baby takes could be so dirty it could seriously affect their long-term health?

“Every child deserves the best start in life and our Government needs to act now to cut air pollution levels.”

Newham Council said it had “made substantial progress on our ambitious five-year Air Quality Action Plan which seeks to reduce pollution in and around schools, and extend school audits, improve walking and cycling infrastructure and support regular car free days and temporary road closures in high footfall areas”.

A spokesperson added: “We have invested in one of the largest networks of air quality monitors in the country, which now captures 90 per cent of all air data, and we have invested in 25 additional low-cost sensors to improve our work.”

The City of London and Waltham Forest councils have been contacted for a comment.

Baby born in area with ‘dangerously polluted air’ every two minutes in UK, study finds

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Research reveals air pollution reduces sperm counts through brain inflammation

Researchers have long known that air pollution can increase the risk of disorders such as obesity, diabetes, and fertility, but they did not know the exact mechanism for how it can lead to these health conditions.

Now, University of Maryland School of Medicine (UMSOM) researchers have shown how air pollution reduces sperm count in mice by causing inflammation in the brain.

Scientists already know that the brain has a direct line to the reproductive organs affecting fertility and sperm count under stressful conditions. For example, emotional stress can lead to skipped menstrual periods in women. However, this latest study, published on Sept. 8 in Environmental Health Perspectives, connects the dots on how breathing polluted air can lower fertility.

“Our findings showed that the damage due to air pollution—at least to the sperm count—could be remedied by removing a single inflammation marker in the brains of mice, suggesting that we may be able to develop therapies that could prevent or reverse the damaging effects of air pollution on fertility,” said lead study author Zhekang Ying, PhD, Assistant Professor of Medicine at UMSOM.

Charles Hong, MD, PhD, the Melvin Sharoky, MD Professor in Medicine and Director of Cardiology Research at UMSOM said, “These findings have wider implications than just fertility, as there are many conditions, such as high blood pressure, diabetes, and heart disease that can result from brain inflammation due to air pollution.”

About 92 percent of the world population lives in areas where the level of fine particles in the air smaller than 2.5 micrometers in diameter exceed the minimum safety standards set by the World Health Organization. These particles can come from sources such as car exhaust, factory emissions, wildfires, and woodburning stoves.

In past studies, some results have shown that mice exposed to air pollution did not always have inflammation of the testes —the male sex organs that make sperm — meaning that some other mechanism was potentially responsible for reduced sperm counts. Knowing the direct link between the brain and the sex organs, the researchers tested whether air pollution increased inflammation in the brain.

For this new study, researchers tested healthy mice and mice bred to lack a marker of inflammation in the brain, called Inhibitor Kappa B Kinase 2, or IKK2 for short, specifically located in the brain’s neurons. They exposed both healthy and IKK2 mutant mice to filtered air or air pollution and then tested their sperm counts. The mice bred without the IKK2 inflammation marker in their neurons did not have reductions in their sperm counts when exposed to the polluted air, unlike the healthy mice.

Researchers then removed IKK2 from specific neurons to determine more precisely how air pollution was leading to lower sperm counts. They found that one specific kind of neuron typically associated with sleep cycle and obesity was responsible for the reduced sperm count due to air pollution. These neurons typically are found in the hypothalamus, a part of the brain which controls hunger, thirst, and sex drive. The hypothalamus also works with the brain’s pituitary gland, which makes hormones that communicate directly with reproductive organs.

“Looking back, it makes perfect sense that the neurons in the hypothalamus are the culprits perpetuating this inflammation response that results in low sperm count, as we know that the hypothalamus is a major pathway link between the brain and the reproductive system,” said Dr. Ying.

E. Albert Reece, MD, PhD, MBA, Executive Vice President for Medical Affairs, UM Baltimore, and the John Z. and Akiko K. Bowers Distinguished Professor and Dean at UMSOM commented, ” Environmental pollution is a problem of equity in that some persons who are poor or of color tend to face more severe health-related conditions due to greater exposure. It is important to explore the mechanisms by which pollution affects the body, so we can devise ways to prevent or treat these conditions to eliminate these health disparities.”

Research reveals air pollution reduces sperm counts through brain inflammation | Mirage News
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Doctors appeal to West Bengal CM for blanket ban on fireworks this Diwali

Several of the city’s leading doctors, medical associations and environmental experts have collectively submitted a letter to the chief minister on the need for a safer, cleaner and greener festive season and have requested a complete ban on firecrackers.

The letter was signed by doctors from Association of Radiation Oncologists of India (AROI), Society of Emergency Medicine India, South Asian Medical Students Association, and NGOs, like SwitchON Foundation, Greenpeace, Rainforest Alliance, TSHED, Y-East.

The doctors appealed for a blanket ban on not only high-decibel firecrackers but all kinds of fireworks, which leave the city’s ambient air irrevocably polluted with heavy metals. In fact, the low-decibel, colourful light-emitting fireworks cause greater air pollution than the firecrackers. However, the current regulation has banned firecrackers beyond 90 decibel, but has allowed low-decibel fireworks.

The signatories, under the aegis of SwitchON Foundation, offered support to the administration for generating awareness about pollution among the public.

Suman Mallik, vice-president, AROI, said, “The extensive use of firecrackers during Diwali leads to five- to 20-times increase in the air pollutants.”

Vinay Jaju of SwitchON Foundation and Convenor of Bengal-CAN said, “We have urged the chief minister to ban firecrackers completely, as was done last year.”

Studies show a single-point rise in the level of air pollution can easily push up rise of Covid cases by 6%-7%.

Soirindhri Banerjee of Radiation Oncology, IPGMER & SSKM Hospital, said, “It is important to recognise the potential of smoke and suspended smog as significant worsening factors of respiratory infections.”

Arup Haldar, consultant pulmonologist, Woodlands Hospitals, said, “More careful approach is warranted from the administrative side to reduce the ambient air pollution in the coming winter. The dual enemies of air pollution and Covid may wreak havoc in the lungs.”

Kaustubh Choudhary, consultant paediatrician, Apollo Gleneagles Hospitals, said, “Last year, due to Covid, there were restrictions. Burning firecrackers was reduced and that helped in the reduction of the dust-related or pollution-related diseases that have led to exaggeration of asthma and respiratory problems for my patients in the past. Now, with the large number of viral-affiliated bronchiolitis cases, if pollution is increased, it can aggravate the core situation. Therefore, possibly, we should have restrictions this time too.”

Doctors appeal to West Bengal CM for blanket ban on fireworks this Diwali | Kolkata News – Times of India
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Pollution affects babies even before birth

Tiny polluting particles produced in and outdoors have been linked to millions of premature births

New research has linked exposure to air pollution during pregnancy to almost 6 million premature births and 3 million underweight babies globally in just one year. Premature births, in particular, are the leading cause of infant mortality in the first four weeks after birth worldwide and can lead to long-term health consequences.

The analysis, which was published in PLOS Medicine, looked at a type of pollution called PM2.5, which is formed of particles that are less than 2.5 micrometres in diameter. Their small size allows them to travel deep into a pregnant person’s lungs and then into the bloodstream, from where they can cause significant damage.

Rakesh Ghosh, the lead author of the study, explained the three ways in which these particles could affect a baby, “One, by affecting the development of the placenta and the umbilical cord. The second could be [that] these particles induce some kind of […] inflammation of the membranes and cause the baby to be born early. And the third possible pathway could be by causing oxidative damage to the DNA.”

The particles in question can be produced by a range of sources, including vehicles and coal power plants. Importantly, they can also be caused by indoor sources, particularly in sub-Saharan Africa and the Indian subcontinent, through the burning of wood, coal, or dung for cooking. Despite outdoor air pollution being more widespread across the world, indoor air pollution accounted for two-thirds of the estimated effects in this analysis.

On tackling the problem, Rakesh said: “Outdoor air pollution […] is ubiquitous. It has to be acted upon by the different authorities. For countries where indoor air pollution is a problem, I think a message should be part of the pre-natal care. Do whatever you can to minimise exposure to indoor air pollution.”

Rakesh finished with a warning, “It is high time to realise that air pollution is not just about premature deaths, but it is harming the babies and our future generations even before they are born.”

Pollution affects babies even before birth | Science News | Naked Scientists
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Scientists identify new chemicals in air pollution that trigger asthma in kids

Dust mites and smoke are known triggers of asthma in children. Now, scientists have identified previously unknown combinations of air pollutants that appear tied to the respiratory disorder.

“Asthma is one the most prevalent diseases affecting children in the United States. In this study, we developed a list of air pollutants a young child may be exposed to that can lead to longer-term problems with asthma,” said senior study co-author Dr. Supinda Bunyavanich, a professor of pediatrics and genetics and genomic sciences at the Icahn School of Medicine at Mount Sinai in New York City.

“Our results show how breathing individual and combinations of pollutants may lead to poor asthma outcomes. We hope that having a more comprehensive, holistic view of air pollution may one day be able to reduce the chances that children will be burdened by asthma,” Bunyavanich said in a hospital news release.

The team used a machine learning algorithm to assess potential early exposure to dozens of pollutants among 151 children with mild to severe asthma.

While some of those asthma cases were associated with a single, known air pollutant, others seemed connected to mixtures of pollutants never before linked with asthma.

The researchers identified 18 individual chemicals that may be linked to poor asthma outcomes among children. This was defined as requiring daily asthma-controlling medication or having to go to an emergency room or be hospitalized due to asthma.

The investigators also discovered new associations between childhood asthma outcomes and 20 pollutant mixtures. Several of the pollutants in the mixtures had never been linked to long-term asthma risk.

The findings were published recently in the Journal of Clinical Investigation.

Asthma affects about 7% of U.S. children, causing them to wheeze and cough.

Previous research has shown that exposure to some specific types of air pollution increases a child’s risk of asthma, but the effects of a mixture of pollutants has been unclear.

“Like many scientists, we wanted to provide a more comprehensive picture of how air toxics contribute to childhood asthma,” said senior study co-author Gaurav Pandey, assistant professor of genetics and genomic sciences at Mount Sinai.

“Traditionally, for technical reasons, it has been difficult to study the health effects of more than one toxic at a time. We overcame this by tapping into the power of machine learning algorithms,” Pandey said in the release.

More information

The American Lung Association has more on childhood asthma.

Scientists identify new chemicals in air pollution that trigger asthma in kids – UPI.com
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