The metallic particles in the smoke emitted by fireworks pose a health risk, particularly to people who suffer from asthma. This is the conclusion of a study led by researchers from the Institute of Environmental Assessment and Water Research (IDAEA-CSIC), published this week in the Journal of Hazardous Materials.

“The toxicological research has shown that many of the metallic particles in the smoke from fireworks are bio-reactive and can affect human health”, Teresa Moreno, a researcher from the IDAEA (CSIC) and lead author of a study that has been published this week in the Journal of Hazardous Materials, tells SINC.

The different colours and effects produced in these displays are achieved by adding metals to the gunpowder. When a pyrotechnic display takes place it releases a lot of smoke, liberating minute metallic particles (of a few microns in size, or even less), which are small enough to be inhaled deeply into the lungs.

“This poses a risk to health, and the effects are probably more acute in people with a background of asthma or cardiovascular problems”, Moreno explains. “The effects in healthy people are still unknown, but common sense tells us it cannot be good to inhale the high levels of metallic particles in this smoke, even if this only happens a few times a year”.

The study focused on the San Juan fiestas (the night of 23 June through to 24 June, 2008) in the Spanish city of Girona. The researchers analysed the levels of more than 30 chemical elements and compounds in May and June in order to confirm that the levels of lead, copper, strontium, potassium and magnesium skyrocketed after the fireworks were launched.

The team found the results were similar in other towns too. During the Mascletà (18 March), for example, in the Las Fallas fiestas in Valencia, levels of these elements rose once again, as well as others such as aluminium, titanium, barium and antimony, and also concentrations of nitric oxide (NO) and sulphur dioxide (SO2).

Other studies have confirmed that the smoke from fireworks increases the presence of metallic particles in the skies over L’Alcora and Borriana (Castellón), Barcelona and even London (United Kingdom) during the Guy Fawkes’ Night celebrations.

“People who live in cities already inhale significant amounts of contaminant particles stemming from traffic emissions, chimneys and cigarettes, and the dense smoke caused by fireworks only worsens this situation”, points out Moreno.

Possible solutions

The researcher compares the problem with that of tobacco. “The less you expose yourself to the smoke, the fewer negative effects it will have on your health, and so the best solution is to avoid inhaling it”.

According to the scientists, in the absence of a ban on fireworks, spectators should stay well back in a place not affected by the smoke and pay attention to the wind direction. They also recommend that fireworks displays should be sited in a place that ensures the plume of smoke will blow away from densely populated areas.

An added problem is the chemical mixtures in the different kinds of fireworks, since some contain extremely toxic metals such as lead. “There should be strict controls on fireworks imports so that those with the potentially most dangerous chemical composition can be avoided”, concludes Moreno.

Reference:

Teresa Moreno, Xavier Querol, Andrés Alastuey, Fulvio Amato, Jorge Pey, Marco Pandolfi, Nino Kuenzli, Laura Bouso, Marcela Rivera y Wes Gibbons. “Effect of fireworks events on urban background trace metal aerosol concentrations: Is the cocktail worth the show?” Journal of Hazardous Materials 183 (1-3): 945-949, november, 15, 2010. Doi:10.1016/j.jhazmat.2010.07.082.

Photo: Jorge Alejo

Further articles of interest about asthma:

• EPA Conference calls for Considerations of Asthmatics
• Breathe easy: A natural fruit compound may help Asthma
• Mitochondrial Dysfunction increases Allergic Airway Inflammation
• Genetic rat model of cholinerc Hypersensitivity: Implications for Chemical Intolerances, Chronic Fatigue and Asthma

For several years the Swedish Prof. Dr. Eva Millqvist researched the disease of hyperreactivity of the respiratory tract and the environmental condition of Chemical Sensitivity (MCS). She specializes in the range of responses to respiratory irritants.

Sick from odors and fragrances

Patients with respiratory symptoms which are triggered by chemicals and odors, are commonly found in allergy clinics. According to Millqvist and her team, these health problems are not explained by asthma or allergic reactions.

German patients frequently report that after they report reactions to chemicals or odors to their allergist, the prospect of seeing a psychologist has been recommended. Whether or not this recommendation is actually appropriate for these patients, it is precisely what this new study from Sweden addresses.

Studies showed reactions

Millqvist’s previous studies have shown that MCS patients often have an increased sensitivity to inhaled capsaicin. This ingredient of chili is famous sensory reactivity. A diagnosis of sensory hyperreactivity of the airways (SHR) is proposed for these kinds of complaints.

In a recent study this renowned scientist and two colleagues, sought to discover whether there is a relationship between asthma and sensory hyperreactivity (SHR). In addition, the research team wanted to investigate whether patients with signs of SHR had increased psychiatric morbidity (anxiety, depression, etc.).

Patients were subjected to tests and questionnaires

The researchers took 724 patients with suspected allergies or asthma from an asthma center. All patients had a questionnaire regarding reactions and behavioral disorders caused by fragrant substances.

A standardized Capsaicin test was carried out and then a questionnaire was given to assess psychiatric morbidity in patients with severe chemical sensitivity to identify those who suffer from SHR.

No evidence of depression or anxiety

Only about 6% of the asthma patients from the allergy center, who participated in the study, had sensory hyperreactivity (SHR). Millqvist and her colleagues stated that this is in consistent with the prevalence in the general Swedish population. There was no significant evidence that SHR is consistent with anxiety or is related to depression.

Patients should insist on precise diagnostic evaluation

The study appeared in the July 2010 issue of the medical journal “Annals of Allergy, Asthma & Immunology.” Those patients who respond to chemicals and odors with hyperreactive respiratory symptoms should perhaps seek an experienced environmental medicine professional if their allergist makes a reference to the possibility of a mental illness.

Author: Silvia K. Müller, CSN – Chemical Sensitivity Network, 2. September 2010.

Translation: Thank’s to Christi Howarth.

Literature:

Johansson A, Millqvist E, Bende M., Relationship of airway sensory hyperreactivity to asthma and psychiatric morbidity, Department of Respiratory Medicine, Central Hospital, Skövde, Sweden, Ann Allergy Asthma Immunol. 2010 Jul; 105(1):20-3.

Splashing around in a swimming pool on a hot summer day may not be as safe as you think

A recent University of Illinois study links the application of disinfectants in recreational pools to previously published adverse health outcomes such as asthma and bladder cancer.

Each year, 339 million visits take place at pools and water parks across the United States. Not only is swimming fun, but it’s also the second most popular form of exercise in the country. Because of this, disinfection of recreational pools is critical to prevent outbreaks of infectious disease.

However, Michael Plewa, U of I professor of genetics, said negative outcomes can occur when disinfection byproducts form reactions with organic matter in pool water.

Pool water represents extreme cases of disinfection that differ from the disinfection of drinking water as pools are continuously exposed to disinfectants.

“All sources of water possess organic matter that comes from decaying leaves, microbes and other dead life forms,” Plewa said. “In addition to organic matter and disinfectants, pool waters contain sweat, hair, skin, urine, and consumer products such as cosmetics and sunscreens from swimmers.”

These consumer products are often nitrogen-rich, causing concern that they may contribute to the generation of nitrogenous disinfection byproducts, Plewa added. When mixed with disinfectants, these products may become chemically modified and converted into more toxic agents. These disinfection byproducts can mutate genes, induce birth defects, accelerate the aging process, cause respiratory ailments, and even induce cancer after long-term exposures. In this study, collections from public pools and a control sample of tap water were evaluated to identify recreational water conditions that could be harmful to your health.

A systematic mammalian cell genotoxicity analysis was used to compare the water samples. Plewa said this sensitive DNA technology examined genomic damage in mammalian cells, allowing researchers to investigate damage at the level of each nucleus within each cell.

The study compared different disinfection methods and environmental conditions. Results proved that all disinfected pool samples exhibited more genomic DNA damage than the source tap water, Plewa said.

“Care should be taken in selecting disinfectants to treat recreational pool water,” Plewa advised. “The data suggest that brominating agents should be avoided as disinfectants of recreational pool water. The best method to treat pool waters is a combination of UV treatment with chlorine as compared to chlorination alone.”

Plewa recommends that organic carbon be removed prior to disinfection when the pool water is being recycled.

Also, swimmers can help reduce the genotoxicity of pool water by showering before entering the water. Pool owners should also remind patrons about the potential harm caused by urinating in a pool. These simple steps can greatly reduce the precursors of toxic disinfection byproducts, Plewa said.

Literature: University of Illinois College of Agricultural, Consumer and Environmental Sciences, Research links recreational pool disinfectants to health problems, July 21, 2010

First Perfume and Fragrance- free Asthma Conference

The American Environmental Protection Agency is holding a large asthma conference from June 17-19, 2010, in Washington D.C.. For the first time ever, the EPA has a special conference feature which is to renounce fragrances and perfume. Thus, the EPA is sending a signal to indicate the fragrance issue and to provide participants with asthma, the possibility to participate at the 2010 National Asthma Forum. Fragrances are among the principle factors for asthma attacks.

Nearly 300 experts and leaders, whose work is to improve the living conditions of people with asthma, are taking part in this event. Primary decision makers of federal and state authorities, as well as those responsible for guidelines, managers of health authorities, scientists, physicians and leaders of self-help organizations are included in this group. Their goal is to design environments to assist in safe living for all asthmatics.

In order to allow all participants to take part in the conference, meaning a conference free of perfume, aftershave, hairspray, body lotion, fabric softener or scented deodorants, the federal agency sent out the following reminder online:

“Asthma-friendly environments are our business – Please help us to make this a fragrance-free event by using fragrance-free personal care products and avoid perfumes and other irritants.”

This is a very positive step by the EPA. They have removed the largest known barrier for asthmatics and chemically injured people this year for the 2010 National Asthma Forum. World leaders on every continent should incorporate this humanitarian example by the EPA , for those disabled with illnesses affecting the breathing and lung function throughout the world.

Author: Silvia K. Müller, CSN – Chemical Sensitivity Network, 17 June 2010

Translation: Thank’s to Christi Howarth

Related Articles:

• Secret Chemicals revealed in Celebrity Perfumes, Teen Body Spray
• Open Letter: Perfumed Stamps constrain people with disability
• Professor urges us to take people with Chemical Sensibility into Account

A simple blood test can now predict whether newborn babies are at high risk of developing allergies as they grow older, thanks to research involving the University of Adelaide.

Professor Tony Ferrante, an immunologist from SA Pathology and the Children’s Research Centre at the University of Adelaide, says the new marker may be the most significant breakthrough in allergy testing for some decades.

“A protein in the immune cells of newborns appears to hold the answer as to whether a baby will either be protected, or susceptible to the development of allergies later on,” Professor Ferrante says.

Amounts of the cell signalling protein, called protein kinase C zeta, are much lower in children at risk of allergies.

Professor Ferrante says the blood test is far more effective than previous indicators, such as a family’s clinical history, or measuring the allergy-inducing antibody IgE.

In collaboration with Professor Susan Prescott from the University of Western Australia and Princess Margaret Hospital for Children, Professor Ferrante’s research team has refined the new marker for allergy risk, originally discovered in 2007, but now modified to a simple and manageable blood test at birth.

The researchers are also looking at whether fish oil supplements given to both pregnant women and those who have just given birth can reduce the risks of the children developing allergies.

“There is evidence that the levels of this important protein increase with fish oil supplementation to protect against allergy development,” Professor Ferrante says.

Australia has one of the highest allergy rates in the world, with 40% of children now suffering from allergic diseases, including food allergies, eczema, asthma and hay fever. These conditions frequently persist into adulthood, placing a heavy burden on the healthcare system.

Literature: The University of Adelaide, New blood test for newborns to detect allergy risk, 21 May 2010