Health impacts: particles and coal dust: Difference between revisions

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* '''Size:''' Particles are [[Regulation under the Clean Air Act|regulated based on size]], with size also affecting how deeply particulates penetrate into the human body and their health impacts.<ref>cite</ref> Large particles like [[Particulate matter and coal dust|dust (PM<sub>10</sub>)]] deposit rapidly after inhalation, mostly settling into our upper respiratory tract. [[Particulate matter and coal dust|Fine particles (PM<sub>2.5</sub>)]] reach the lower respiratory tract and lungs, and [[Particulate matter and coal dust|very-fine particles (PM<sub>1</sub>)]] tend to settle deep in the lungs and alveoli, the tiny air sacs where oxygen and carbon dioxide are exchanged between the lungs and blood during breathing. Ultrafine particles (PM<sub>0.1</sub>) are small enough to penetrate cell walls to enter the bloodstream. All else being equal, breathing dust is not thought to be as harmful to our health as breathing in smaller particles. However, there is research identifying health impacts of exposure to [[Particulate matter and coal dust|PM<sub>10</sub>]] specifically, for example, asthma diagnosis prevalence and asthma-related emergency department visits in children.<ref name=":0">Keet et al., [https://www.atsjournals.org/doi/10.1164/rccm.201706-1267OC Long-Term Coarse Particulate Matter Exposure Is Associated with Asthma among Children in Medicaid], ''American Journal of Respiratory and Critical Care Medicine'', 197, 6, 737–746, 2017.</ref>
* '''Size:''' Particles are [[Regulation under the Clean Air Act|regulated based on size]], with size also affecting how deeply particulates penetrate into the human body and their health impacts.<ref>cite</ref> Large particles like [[Particulate matter and coal dust|dust (PM<sub>10</sub>)]] deposit rapidly after inhalation, mostly settling into our upper respiratory tract. [[Particulate matter and coal dust|Fine particles (PM<sub>2.5</sub>)]] reach the lower respiratory tract and lungs, and [[Particulate matter and coal dust|very-fine particles (PM<sub>1</sub>)]] tend to settle deep in the lungs and alveoli, the tiny air sacs where oxygen and carbon dioxide are exchanged between the lungs and blood during breathing. Ultrafine particles (PM<sub>0.1</sub>) are small enough to penetrate cell walls to enter the bloodstream. All else being equal, breathing dust is not thought to be as harmful to our health as breathing in smaller particles. However, there is research identifying health impacts of exposure to [[Particulate matter and coal dust|PM<sub>10</sub>]] specifically, for example, asthma diagnosis prevalence and asthma-related emergency department visits in children.<ref name=":0">Keet et al., [https://www.atsjournals.org/doi/10.1164/rccm.201706-1267OC Long-Term Coarse Particulate Matter Exposure Is Associated with Asthma among Children in Medicaid], ''American Journal of Respiratory and Critical Care Medicine'', 197, 6, 737–746, 2017.</ref>
* '''Composition:''' Particles, including dust, be made of a wide variety of materials such as oils, heavy metals, salts, and black carbon, also known as soot, which each causing different health impacts. Particles with high concentrations of toxic metals have been shown to be especially harmful than particles on average.<ref name=":1">Bell et al., [https://www.atsjournals.org/doi/10.1164/rccm.200808-1240OC Hospital Admissions and Chemical Composition of Fine Particle Air Pollution], ''American Journal of Respiratory and Critical Care Medicine'', 179, 12, 1115–1120, 2009.</ref><ref>Ostro et al., [https://oem.bmj.com/content/65/11/750 The Impact of Components of Fine Particulate Matter on Cardiovascular Mortality in Susceptible Subpopulations], ''Occupational & Environmental Medicine'', 65, 750–756, 2008.</ref><ref>Ostro et al., [https://ehp.niehs.nih.gov/doi/10.1289/ehp.9281 The Effects of Components of Fine Particulate Air Pollution on Mortality in California: Results from CALFINE], ''Environmental Health Perspectives,'' 115, 13–19, 2007.</ref> For example, researchers found a higher risk of hospitalization associated with short-term [[Particulate matter and coal dust|PM<sub>2.5</sub>]] exposure in locations where [[Particulate matter and coal dust|PM<sub>2.5</sub>]] had higher concentrations of nickel, vanadium, and elemental carbon.<ref name=":1" /> There is also evidence that the components of larger particles, including metals, can translocate from the lungs to the bloodstream and reach the brain, such that even large particles can have systematic effects on our bodies.<ref>cite</ref>
* '''Composition:''' Particles, including dust, be made of a wide variety of materials such as oils, heavy metals, salts, and black carbon, also known as soot, which each causing different health impacts. Particles with high concentrations of toxic metals have been shown to be especially harmful than particles on average.<ref name=":1">Bell et al., [https://www.atsjournals.org/doi/10.1164/rccm.200808-1240OC Hospital Admissions and Chemical Composition of Fine Particle Air Pollution], ''American Journal of Respiratory and Critical Care Medicine'', 179, 12, 1115–1120, 2009.</ref><ref>Ostro et al., [https://oem.bmj.com/content/65/11/750 The Impact of Components of Fine Particulate Matter on Cardiovascular Mortality in Susceptible Subpopulations], ''Occupational & Environmental Medicine'', 65, 750–756, 2008.</ref><ref>Ostro et al., [https://ehp.niehs.nih.gov/doi/10.1289/ehp.9281 The Effects of Components of Fine Particulate Air Pollution on Mortality in California: Results from CALFINE], ''Environmental Health Perspectives,'' 115, 13–19, 2007.</ref> For example, researchers found a higher risk of hospitalization associated with short-term [[Particulate matter and coal dust|PM<sub>2.5</sub>]] with higher concentrations of nickel, vanadium, and elemental carbon.<ref name=":1" /> For people living near a major source of metals, concentrations over toxic metals in airborne [[Particulate matter and coal dust|PM<sub>10</sub>]] have been found to correlate with metals concentrations in residents' blood.<ref>Gangwar et al., [https://www.sciencedirect.com/science/article/pii/S0160412018312662 Assessment of Air Pollution Caused by Illegal E-Waste Burning to Evaluate the Human Health Risk], ''Environment International'', 125, 191–199, 2019.</ref>
* '''Shape:''' Particle shape can also be important. In perhaps the most well known example, asbestos particles are long, thin fibers that, because of their shape, can become permanently lodged in the lungs, leading to lung cancer and mesothelioma.<ref>cite</ref>
* '''Shape:''' Particle shape can also be important. In perhaps the most well known example, asbestos particles are long, thin fibers that, because of their shape, can become permanently lodged in the lungs, leading to lung cancer and mesothelioma.<ref>cite</ref>


Revision as of 17:28, 28 May 2025

Airborne Particles

Exposure to air pollution––especially particles––is the second leading risk factor for mortality globally (behind only high blood pressure), contributing to approximately 8 million deaths each year.[1] Particles are very harmful,[2][3][4] with chronic exposure to particulates shortening our lives by an average of 1–3 years.[5][6][7] Chronic and acute exposure to particles has also been linked to: increased risk of death from cardiovascular disease;[8][9][10][11][12][13][14][15][16][17][18] diminished lung function and damage to the small airways of the lungs;[19][20][21][22][23] increased hospitalization for asthma attacks for children;[24][25][26][27] slowed lung function growth in children and teenagers;[28][29][30] increased risk of lower birth weights and infant mortality;[31][32][33][34][35][36] elevated risk of developing type-2 diabetes;[37][38][39] cognitive impacts, including links to dementia, Alzheimer’s Disease, and Parkinson’s Disease;[40][41][42][43] and increased risk of mental health issues such as depression.[44] There is no safe level of exposure to particle pollution.[45][46]

The health impacts of particles are influenced by particle size, composition, and shape.

  • Size: Particles are regulated based on size, with size also affecting how deeply particulates penetrate into the human body and their health impacts.[47] Large particles like dust (PM10) deposit rapidly after inhalation, mostly settling into our upper respiratory tract. Fine particles (PM2.5) reach the lower respiratory tract and lungs, and very-fine particles (PM1) tend to settle deep in the lungs and alveoli, the tiny air sacs where oxygen and carbon dioxide are exchanged between the lungs and blood during breathing. Ultrafine particles (PM0.1) are small enough to penetrate cell walls to enter the bloodstream. All else being equal, breathing dust is not thought to be as harmful to our health as breathing in smaller particles. However, there is research identifying health impacts of exposure to PM10 specifically, for example, asthma diagnosis prevalence and asthma-related emergency department visits in children.[25]
  • Composition: Particles, including dust, be made of a wide variety of materials such as oils, heavy metals, salts, and black carbon, also known as soot, which each causing different health impacts. Particles with high concentrations of toxic metals have been shown to be especially harmful than particles on average.[48][49][50] For example, researchers found a higher risk of hospitalization associated with short-term PM2.5 with higher concentrations of nickel, vanadium, and elemental carbon.[48] For people living near a major source of metals, concentrations over toxic metals in airborne PM10 have been found to correlate with metals concentrations in residents' blood.[51]
  • Shape: Particle shape can also be important. In perhaps the most well known example, asbestos particles are long, thin fibers that, because of their shape, can become permanently lodged in the lungs, leading to lung cancer and mesothelioma.[52]

Coal Dust

The majority of research on the health impacts of coal dust, which is a type of particulate matter, has come from studies on occupational exposures of coal miners. Miners’ inhalation exposure to coal dust has been shown to place them at an increased risk of developing coal workers’ pneumoconiosis (CWP), also known as coal miner’s lung or black lung disease, progressive massive fibrosis, lung cancer, decreased lung function, as well as other health impacts.[53]

Coal dust typically contains high levels of toxic metals, including mercury (Hg), lead (Pb), arsenic (Ar), cadmium (Cd), as well as crystalline silica.[54] These substances are harmful when inhaled or ingested and are known to cause cancer, fetal defects, and neurological damage, even at very low doses.[55] Coal dust also contains high levels of transition metals, including iron (Fe), manganese (Mn), and copper (Cu) that can induce oxidative stress in our bodies.[56] Because coal dust has high concentrations of metals, there is reason to believe it causes harm at exposures below PM2.5 and PM10 National Ambient Air Quality Standards.

There is a body of research identifying an array of adverse health impacts on communities living near coal mines and areas of coal-related activities, particularly in Appalachia. These include: higher rates of lung, kidney, and heart disease, even for people who never worked in a mine;[57] worse adjusted health status and with higher rates of cardiopulmonary disease, chronic obstructive pulmonary disease (COPD), and hypertension;[58] more days of self-rated poor physical and/or mental health and activity limitation;[59] higher mortality, including from lung cancer;[60] and a wide variety of more frequent birth defects.[61]

Comparable studies have not been done to assess health impacts on residents living near coal export facilities in Hampton Roads. There are references to a 2005 study by the Peninsula Health District purporting to show that Southeast Newport News residents visited the emergency room for asthma at a rate double that of both Newport News and Virginia on average.[62] However, a copy of the document could not be found.

Interviews with residents of Southeast Newport News and Lambert’s Point reveal that asthma and other respiratory health impacts are widespread and a major issue of community concern. One resident of Southeast Newport News, Uneita Scott, reported that her sister became sick from exposure to coal dust as a child: "Her diagnosis was a coal miner's lung so they had to amputate it for her to have a healthy life. At 14 years old, doctors verbatim said she had the lung of a 30-year-old that worked in the coal mines."[63]

Documents

American Lung Association, State of the Air

U.S. Environmental Protection Agency, Integrated Science Assessment (ISA) for Particulate Matter, 2019

References

  1. ↑ State of Global Air, Health Impacts of Air Pollution.
  2. ↑ American Lung Association, State of the Air, Health Impact of Air Pollution.
  3. ↑ U.S. Environmental Protection Agency, Integrated Science Assessment (ISA) for Particulate Matter, 2019.
  4. ↑ Liu et al., Ambient Particulate Air Pollution and Daily Mortality in 652 Cities, The New England Journal of Medicine, 381, 8, 705–715, 2019.
  5. ↑ State of Global Air, Impact of Air Pollution on Life Expectancy.
  6. ↑ Greenstone et al., Air Quality Life Index, Annual Update, 2024.
  7. ↑ Pope III et al., Fine-Particulate Air Pollution and Life Expectancy in the United States, The New England Journal of Medicine, 360, 4, 376–386, 2009.
  8. ↑ Dockery et al., An Association between Air Pollution and Mortality in Six U.S. Cities, The New England Journal of Medicine, 329, 24, 1753–1759, 1993.
  9. ↑ Pope et al., Particulate Air Pollution as a Predictor of Mortality in a Prospective Study of U.S. Adults, American Journal of Respiratory and Critical Care Medicine, 151, 3, 1995.
  10. ↑ Brunekreef et al., Effects of Long-Term Exposure to Traffic-Related Air Pollution on Respiratory and Cardiovascular Mortality in the Netherlands: The NLCS-AIR Study, Health Effect Institute Research Report, 139, 2009.
  11. ↑ Eftim et al., Fine Particulate Matter and Mortality: A Comparison of the Six Cities and American Cancer Society Cohorts with a Medicare Cohort, Epidemiology, 19, 2, 209–216, 2008.
  12. ↑ Laden et al., Reduction in Fine Particulate Air Pollution and Mortality: Extended Follow-Up of the Harvard Six Cities Study, American Journal of Respiratory and Critical Care Medicine, 173, 6, 667–672, 2006.
  13. ↑ Miller et al., Long-Term Exposure to Air Pollution and Incidence of Cardiovascular Events in Women, The New England Journal of Medicine, 356, 5, 447–458, 2007.
  14. ↑ Pope III et al., Cardiovascular Mortality and Long-Term Exposure to Particulate Air Pollution: Epidemiological Evidence of General Pathophysiological Pathways of Disease, Circulation, 109, 1, 71–77, 2004.
  15. ↑ Puett et al., Chronic Particulate Exposure, Mortality, and Coronary Heart Disease in the Nurses’ Health Study, American Journal of Epidemiology, 168, 10, 1161–1168, 2008.
  16. ↑ Puett et al., Chronic Fine and Coarse Particulate Exposure, Mortality, and Coronary Heart Disease in the Nurses’ Health Study, Environmental Health Perspectives, 117, 11, 1697–1701, 2009.
  17. ↑ Samet et al., Fine Particulate Air Pollution and Mortality in 20 U.S. Cities, 1987–1994, The New England Journal of Medicine, 343, 24, 1742–1749, 2000.
  18. ↑ Zanobetti et al., The Effect of Fine and Coarse Particulate Air Pollution on Mortality: A National Analysis, Environmental Health Perspectives, 117, 6, 898–903, 2009.
  19. ↑ Wu et al., Case Report: Lung Disease in World Trade Center Responders Exposed to Dust and Smoke: Carbon Nanotubes Found in the Lungs of World Trade Center Patients and Dust Samples, Environmental Health Perspectives, 118, 4, 499–504, 2010.
  20. ↑ Zhang et al., Long-Term Exposure to Diesel Engine Exhaust Induced Lung Function Decline in a Cross Sectional Study, Industrial Health, 55, 1, 13–26, 2017.
  21. ↑ Cui et al., Association between Bedroom Particulate Matter Filtration and Changes in Airway Pathophysiology in Children with Asthma, Journal of the American Medical Association Pediatrics, 174, 6, 533–542, 2020.
  22. ↑ Karr et al., Effects of Subchronic and Chronic Exposure to Ambient Air Pollutants on Infant Bronchiolitis, American Journal of Epidemiology, 165, 5, 553–560, 2007.
  23. ↑ Leikauf et al., Mechanisms of Ultrafine Particle-Induced Respiratory Health Effects, Experimental & Molecular Medicine, 52, 329–337, 2020.
  24. ↑ Altman et al., Relationships of Outdoor Air Pollutants to Non-Viral Asthma Exacerbations and Airway Inflammatory Responses in Urban Children and Adolescents: A Population-Based Study, The Lancet Planetary Health, 7, 1, e33–e44, 2023.
  25. ↑ 25.0 25.1 Keet et al., Long-Term Coarse Particulate Matter Exposure Is Associated with Asthma among Children in Medicaid, American Journal of Respiratory and Critical Care Medicine, 197, 6, 737–746, 2017.
  26. ↑ Tolbert et al., Air Quality and Pediatric Emergency Room Visits for Asthma in Atlanta, Georgia, USA, American Journal of Epidemiology, 151, 798–810, 2000.
  27. ↑ Schwartz et al., Particulate Air Pollution and Hospital Emergency Room Visits for Asthma in Seattle, American Review of Respiratory Disease, 147, 826–31, 1993.
  28. ↑ Garcia et al., Air Pollution and Lung Function in Children, Journal of Allergy and Clinical Immunology, 148, 1, 1–14, 2021.
  29. ↑ Raizenne et al., Acute lung Function Responses to Ambient Acid Aerosol Exposures in Children, Environmental Health Perspectives, 79, 179–85, 1989.
  30. ↑ Thurston et al., Summertime Haze Air Pollution and Children with Asthma, American Journal of Respiratory and Critical Care Medicine, 155, 654–660, 1997.
  31. ↑ Fong et al., Fine Particulate Air Pollution and Birthweight: Differences in Associations along the Birthweight Distribution, Epidemiology, 30, 5, 617–623, 2020.
  32. ↑ Basu et al., Effects of Fine Particulate Matter and Its Constituents on Low Birth Weight among Full-Term Infants in California, Environmental Research, 128, 42–51, 2014.
  33. ↑ Dadvand et al., Maternal Exposure to Particulate Air Pollution and Term Birth Weight: A Multi-Country Evaluation of Effect and Heterogeneity, Environmental Health Perspectives, 121, 3, 267–373, 2013.
  34. ↑ Ebisu et al., Airborne PM2.5 Chemical Components and Low Birth Weight in the Northeastern and Mid-Atlantic Regions of the United States, Environmental Health Perspectives, 120, 12, 1746–1752, 2012.
  35. ↑ Kloog et al., Using New Satellite Based Exposure Methods to Study the Association between Pregnancy PM2.5 Exposure, Premature Birth and Birth Weight in Massachusetts, Environmental Health, 11, 40, 2012.
  36. ↑ Stieb et al., Ambient Air Pollution, Birth Weight and Preterm Birth: A Systematic Review and Meta-Analysis, Environmental Research, 117, 100–111, 2012.
  37. ↑ Eze et al., Association between Ambient Air Pollution and Diabetes Mellitus in Europe and North America: Systematic Review and Meta-Analysis, Environmental Health Perspectives, 123, 5, 381-389, 2015.
  38. ↑ Liu et al., Associations between Long-Term Exposure to Ambient Air Pollution and Risk of Type 2 Diabetes Mellitus: A Systematic Review and Meta-Analysis, Environ Pollution, 252, ptB, 1235–1245, 2019.
  39. ↑ Wu et al., Ambient Air Pollution Associated with Incidence and Dynamic Progression of Type 2 Diabetes: A Trajectory Analysis of a Population‑Based Cohort, BMC Medicine, 20, 375, 2022.
  40. ↑ Weuve, et al., Exposure to Air Pollution in Relation to Risk of Dementia and Related Outcomes: An Updated Systematic Review of the Epidemiological Literature, Environmental Health Perspectives, 129, 96001, 2021.
  41. ↑ Shi et al., Long-Term Effects of PM2.5 on Neurological Disorders in the American Medicare Population: A Longitudinal Cohort Study, Lancet Planetary Health, 4, e557–e565, 2020.
  42. ↑ Shi et al., Incident Dementia and Long-Term Exposure to Constituents of Fine Particle Air Pollution: A National Cohort Study in the United States, Proceeding of the National Academy of Sciences U.S.A., 120, e2211282119, 2022.
  43. ↑ Peters, Commentary: Ambient Air Pollution and Alzheimer’s Disease: The Role of the Composition of Fine Particles, Proceeding of the National Academy of Sciences U.S.A., 120, 3, e2220028120, 2023.
  44. ↑ Gao X et al., Long-Term Air Pollution, Genetic Susceptibility, and the Risk of Depression and Anxiety: A Prospective Study in the UK Biobank Cohort, Environmental Health Perspectives, 131, 1, 2023.
  45. ↑ Wei et al., Exposure-Response Associations between Chronic Exposure to Fine Particulate Matter and Risks of Hospital Admission for Major Cardiovascular Diseases: Population Based Cohort Study, BMJ, 384, e076939, 2024.
  46. ↑ Sun et al., Short Term Exposure to Low Level Ambient Fine Particulate Matter and Natural Cause, Cardiovascular, and Respiratory Morbidity among US Adults with Health Insurance: Case Time Series Study, BMJ, 384, e076322, 2024.
  47. ↑ cite
  48. ↑ 48.0 48.1 Bell et al., Hospital Admissions and Chemical Composition of Fine Particle Air Pollution, American Journal of Respiratory and Critical Care Medicine, 179, 12, 1115–1120, 2009.
  49. ↑ Ostro et al., The Impact of Components of Fine Particulate Matter on Cardiovascular Mortality in Susceptible Subpopulations, Occupational & Environmental Medicine, 65, 750–756, 2008.
  50. ↑ Ostro et al., The Effects of Components of Fine Particulate Air Pollution on Mortality in California: Results from CALFINE, Environmental Health Perspectives, 115, 13–19, 2007.
  51. ↑ Gangwar et al., Assessment of Air Pollution Caused by Illegal E-Waste Burning to Evaluate the Human Health Risk, Environment International, 125, 191–199, 2019.
  52. ↑ cite
  53. ↑ cite
  54. ↑ cite
  55. ↑ cite
  56. ↑ cite
  57. ↑ cite
  58. ↑ cite
  59. ↑ cite
  60. ↑ cite
  61. ↑ cite
  62. ↑ cite
  63. ↑ Saitta, Newport News residents say coal dust is the source of some health problems, 3WTKR, April 20, 2024.
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