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Matti Narkia

Traffic Triples Heart Attack Risk - WebMD - 0 views

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    March 13, 2009 -- Whether you drive, take the bus, or bicycle, being in heavy traffic triples your risk of heart attack within one hour. Air pollution from car fumes is the likely culprit, suggest Annette Peters, PhD, and colleagues at the Institute of Epidemiology, Helmholtz Center, Munich, Germany. In a previous study, Peters and colleagues found that a sizeable proportion of heart attacks -- about 8% -- could be attributed to being in traffic. To follow up, the researchers interviewed 1,454 people who survived heart attacks. In the hour before their heart attack, many of the survivors had been in heavy traffic. Analysis of the data showed that these heart-attack-vulnerable people were 3.2 times more likely to suffer a heart attack if they'd been in heavy traffic in the previous hour.
Dr. John Bureau DC

Face Protection Effective In Preventing The Spread Of Influenza, Study Suggests - 0 views

  • ScienceDaily (May 22, 2009) — A new article in the journal Risk Analysis assessed various ways in which aerosol transmission of the flu, a central mode of diffusion which involves breathing droplets in the air, can be reduced. Results show that face protection is a key infection control measure for influenza and can thus affect how people should try to protect themselves from the swine flu. See also: Health & Medicine Cold and Flu Influenza Bird Flu Plants & Animals Bird Flu Research Virology Developmental Biology Reference Flu vaccine Influenza pandemic Transmission (medicine) Avian flu Lawrence M. Wein, Ph.D., and Michael P. Atkinson of Stanford University constructed a mathematical model of aerosol transmission of the flu to explore infection control measures in the home. Their model predicted that the use of face protection including N95 respirators (these fit tight around the face and are often worn by construction workers) and surgical masks (these fit looser around the face and are often worn by dental hygienists) are effective in preventing the flu. The filters in surgical masks keep out 98 percent of the virus. Also, only 30 percent of the benefits of the respirators and masks are achieved if they are used only after an infected person develops symptoms. "Our research aids in the understanding of the efficacy of infection control measures for influenza, and provides a framework about the routes of transmission," the authors conclude. This timely article has the potential to impact current efforts and recommendations to control the so-called swine flu by international, national and local governments in perspective. This study is published in the journal Risk Analysis.
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    ScienceDaily (May 22, 2009) - A new article in the journal Risk Analysis assessed various ways in which aerosol transmission of the flu, a central mode of diffusion which involves breathing droplets in the air, can be reduced. Results show that face protection is a key infection control measure for influenza and can thus affect how people should try to protect themselves from the swine flu. Lawrence M. Wein, Ph.D., and Michael P. Atkinson of Stanford University constructed a mathematical model of aerosol transmission of the flu to explore infection control measures in the home. Their model predicted that the use of face protection including N95 respirators (these fit tight around the face and are often worn by construction workers) and surgical masks (these fit looser around the face and are often worn by dental hygienists) are effective in preventing the flu. The filters in surgical masks keep out 98 percent of the virus. Also, only 30 percent of the benefits of the respirators and masks are achieved if they are used only after an infected person develops symptoms. "Our research aids in the understanding of the efficacy of infection control measures for influenza, and provides a framework about the routes of transmission," the authors conclude. This timely article has the potential to impact current efforts and recommendations to control the so-called swine flu by international, national and local governments in perspective. This study is published in the journal Risk Analysis.
Dr. John Bureau DC

Childhood Secondhand Smoke Effects Persist - 0 views

  • SAN DIEGO, May 20 -- The effects of exposure to secondhand smoke in childhood may persist for decades, a researcher said here. In a large cohort of nonsmokers, early signs of emphysema were noticeable on CT scans among those who had lived with one or more smokers in childhood, according to Gina Lovasi, Ph.D., of Columbia University. Those signs -- a significant increase in the number of "air-like spaces" -- were not accompanied by any clinical symptoms, Dr. Lovasi said at the annual meeting of the American Thoracic Society.
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    SAN DIEGO, May 20 -- The effects of exposure to secondhand smoke in childhood may persist for decades, a researcher said here. In a large cohort of nonsmokers, early signs of emphysema were noticeable on CT scans among those who had lived with one or more smokers in childhood, according to Gina Lovasi, Ph.D., of Columbia University. Those signs -- a significant increase in the number of "air-like spaces" -- were not accompanied by any clinical symptoms, Dr. Lovasi said at the annual meeting of the American Thoracic Society.
Matti Narkia

NEJM -- Long-Term Ozone Exposure and Mortality - 0 views

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    Long-term ozone exposure and mortality. Jerrett M, Burnett RT, Pope CA 3rd, Ito K, Thurston G, Krewski D, Shi Y, Calle E, Thun M. N Engl J Med. 2009 Mar 12;360(11):1085-95. PMID: 19279340 [
Matti Narkia

Long-term ozone exposure may increase risk of death from respiratory causes - 0 views

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    MedWire News: Long-term exposure to ozone is associated with an increased risk of death from respiratory causes, researchers have found.\n\nA two-pollutant model in the study, published in the New England Journal of Medicine, showed that levels of fine particulate matter less than 2.5 µm in diameter (PM2.5) were associated with death from cardiovascular causes, whereas increased ozone concentrations were associated with an increased risk of death from cardiopulmonary causes.
Matti Narkia

Sham vs. Wham: The Health Insider: Urban Dwellers Alert: Exhaust Fumes Cause Arterial S... - 0 views

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    Do you live in a big city or an area where you are sometimes forced to inhale car and truck exhaust? If so, you should strongly consider using a face mask, because exhaust causes arteries to lose their flexibility. Researchers writing in the journal Particle and Fibre Toxicology found that exposure to engine pollution resulted in arterial stiffness in a group of healthy volunteers.
Matti Narkia

Diesel exhaust inhalation causes vascular dysfunction and impaired endogenous fibrinoly... - 0 views

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    Diesel exhaust inhalation causes vascular dysfunction and impaired endogenous fibrinolysis. Mills NL, Törnqvist H, Robinson SD, Gonzalez M, Darnley K, MacNee W, Boon NA, Donaldson K, Blomberg A, Sandstrom T, Newby DE. Circulation. 2005 Dec 20;112(25):3930-6. PMID: 16365212 doi: 10.1161/CIRCULATIONAHA.105.588962
Matti Narkia

Persistent endothelial dysfunction in humans after diesel exhaust inhalation - Am J Res... - 0 views

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    Persistent endothelial dysfunction in humans after diesel exhaust inhalation. Törnqvist H, Mills NL, Gonzalez M, Miller MR, Robinson SD, Megson IL, Macnee W, Donaldson K, Söderberg S, Newby DE, Sandström T, Blomberg A. Am J Respir Crit Care Med. 2007 Aug 15;176(4):395-400. Epub 2007 Apr 19. PMID: 17446340 doi: 10.1164/rccm.200606-872OC
Matti Narkia

Exposure to diesel exhaust induces changes in EEG in human volunteers - Particle and Fi... - 0 views

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    Exposure to diesel exhaust induces changes in EEG in human volunteers. Crüts B, van Etten L, Törnqvist H, Blomberg A, Sandström T, Mills NL, Borm PJ. Part Fibre Toxicol. 2008 Mar 11;5:4. PMID: 18334019 doi:10.1186/1743-8977-5-4
Matti Narkia

NEJM -- Ischemic and Thrombotic Effects of Dilute Diesel-Exhaust Inhalation in Men with... - 0 views

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    Ischemic and thrombotic effects of dilute diesel-exhaust inhalation in men with coronary heart disease. Mills NL, Törnqvist H, Gonzalez MC, Vink E, Robinson SD, Söderberg S, Boon NA, Donaldson K, Sandström T, Blomberg A, Newby DE. N Engl J Med. 2007 Sep 13;357(11):1075-82. PMID: 17855668
Matti Narkia

Diesel exhaust inhalation increases thrombus formation in man. - Eur Heart J. 2008 Dec - 0 views

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    Diesel exhaust inhalation increases thrombus formation in man. Lucking AJ, Lundback M, Mills NL, Faratian D, Barath SL, Pourazar J, Cassee FR, Donaldson K, Boon NA, Badimon JJ, Sandstrom T, Blomberg A, Newby DE. Eur Heart J. 2008 Dec;29(24):3043-51. Epub 2008 Oct 24. PMID: 18952612
Dr. John Bureau DC

Grilling With Charcoal Less Climate-friendly Than Grilling With Propane, Study Finds - 0 views

  • ScienceDaily (May 13, 2009) — Do biofuels always create smaller carbon footprints than their fossil-fuel competitors? Not necessarily, finds a paper published in Elsevier's Environmental Impact Assessment Review. See also: Earth & Climate Energy and the Environment Renewable Energy Geography Global Warming Air Quality Environmental Science Reference Activated carbon Slash and burn Combustion Natural gas The article reports that in the UK, the carbon footprint for charcoal grilling is almost three times as large as that for LPG grilling. (Liquefied petroleum gas (LPG), often referred to as propane, is a mixture of mostly propane and butane).
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    ScienceDaily (May 13, 2009) - Do biofuels always create smaller carbon footprints than their fossil-fuel competitors? Not necessarily, finds a paper published in Elsevier's Environmental Impact Assessment Review. The article reports that in the UK, the carbon footprint for charcoal grilling is almost three times as large as that for LPG grilling. (Liquefied petroleum gas (LPG), often referred to as propane, is a mixture of mostly propane and butane)
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