Documented Health Risks
Health Effects.
The Human Cost.
Potential health impacts of chemicals identified in atmospheric programs, drawn from peer-reviewed research, government toxicological profiles (ATSDR, EPA, CDC/NIOSH), and reported symptoms under investigation by our coalition.
About This Information
The health effects described below are drawn from publicly available government toxicological profiles (ATSDR, U.S. EPA, CDC/NIOSH) and peer-reviewed scientific literature. These sources describe known health risks at specific exposure levels documented in occupational, environmental, and clinical settings. This information is presented for educational purposes only and does not constitute medical advice, diagnosis, or an assertion that any individual has been exposed to harmful levels. Our legal and scientific coalition is independently evaluating whether exposure at levels relevant to atmospheric programs may pose health risks in affected communities.
- Aluminum nanoparticles are capable of crossing the blood-brain barrier, according to peer-reviewed research.[ATSDR] (opens in new tab)
- A 2025 Wiley meta-analysis links chronically elevated brain aluminum levels with increased risk of Alzheimer's disease pathology.[Wiley] (opens in new tab)
- ATSDR notes that exposure to high levels of aluminum may result in neurological problems, including cognitive impairment.[ATSDR] (opens in new tab)
- Chronic neuroinflammation and oxidative stress in neural tissue have been documented in occupational exposure studies.[ATSDR] (opens in new tab)
- Barium ingestion at high levels can cause hypokalemia — dangerously low potassium — leading to cardiac arrhythmia.[ATSDR] (opens in new tab)
- ATSDR documents that high barium exposure may cause increased blood pressure, difficulty breathing, and changes in heart rhythm.[ATSDR] (opens in new tab)
- Severe cases may involve skeletal muscle weakness and respiratory paralysis, per ATSDR toxicological review.[ATSDR] (opens in new tab)
- The EPA states short-term SO2 exposure can harm the respiratory system and make breathing difficult, particularly for asthmatics.[U.S. EPA] (opens in new tab)
- Chronic exposure to sulfur dioxide is associated with permanent reductions in lung function according to EPA assessments.[U.S. EPA] (opens in new tab)
- ATSDR notes that workers who breathe large amounts of aluminum dusts can have lung problems including respiratory fibrosis.[ATSDR] (opens in new tab)
- Children, elderly, and immunocompromised individuals are disproportionately affected by airborne irritants according to EPA data.[U.S. EPA] (opens in new tab)
- ATSDR confirms that strontium can replace calcium in bone tissue, impairing skeletal integrity.[ATSDR] (opens in new tab)
- High levels of stable strontium may impair bone growth in children, per ATSDR toxicological profile.[ATSDR] (opens in new tab)
- Strontium enters the food chain through contaminated soil and water, with potential for bioaccumulation.[ATSDR] (opens in new tab)
Toxicology Around Airports
Research has documented health risks associated with ultrafine particle (UFP) emissions near airports. These peer-reviewed studies and news articles explore the connection between airport proximity, jet fuel emissions, and adverse health outcomes including respiratory issues, cardiovascular problems, and neurological effects.
Living near a busy airport can make you sick, new study finds
POLITICO - Health effects include higher rates of high blood pressure, diabetes and dementia
Effects of short-term exposures to ultrafine particles near an airport
ScienceDirect - Study on healthy subjects exposed to UFPs near airports
Distinct Ultrafine Particle Profiles Associated with Aircraft and Roadway Traffic
Environmental Science & Technology - Analysis of UFP sources and profiles
Warning to millions as tiny particles emitted by planes put public health at risk
The Independent - Study findings on aircraft emissions and health risks
Size distribution, sources and chemistry of ultrafine particles at Barcelona-El Prat Airport
ScienceDirect - Analysis of UFP characteristics at a major European airport
Living Near an Airport Could Be a Matter Of Life And Death
Air Filters for Clean Air - Health impacts of airport proximity
Particulate Matter and Gases Health Issues
Overview of health effects from particulate matter exposure
Military Airports: Environmental Concerns
Environmental and health issues at military airport facilities
Toxicology Inside Airplane Cabins
Research has identified health risks from contaminated bleed air inside aircraft cabins. Engine oil leaking past seals can introduce nanoparticles carrying toxic organophosphates and volatile organic compounds into cabin air, potentially causing “Aerotoxic Syndrome” in crew members and passengers. These nanoparticles can cross the blood-brain barrier and deposit toxic compounds in the central nervous system.
The role of nanoparticles in bleed air in the etiology of Aerotoxic Syndrome
PubMed (2024) - Review of cabin air-quality studies 2003-2023, examining nanoparticles as vectors for toxic compounds
Confirms Nanoparticles in Aircraft Cabin Air
Research confirming presence of nanoparticles carrying engine oil derivatives in bleed air systems
Citations & References
“Short-term exposures to SO2 can harm the human respiratory system and make breathing difficult. People with asthma, particularly children, are sensitive to these effects.”
“Ingesting high levels of barium can cause difficulty breathing, increased blood pressure, changes in heart rhythm, stomach irritation, muscle weakness, and damage to the liver, kidney, heart, and spleen.”
“Exposure to high levels of aluminum may result in respiratory and neurological problems. Workers who breathe large amounts of aluminum dusts can have lung problems.”
“Strontium can replace calcium in bone. High levels of stable strontium may impair bone growth in children.”
“Peer-reviewed meta-analysis linking chronically elevated brain aluminum levels with increased risk of Alzheimer's disease pathology.”
Believe You May Have Been Affected?
If you believe you or your family may have experienced unusual environmental exposure or related health symptoms, you may be eligible to have your situation reviewed by our legal and scientific team. Each case will be evaluated based on available evidence, medical documentation, and applicable law.
All donations are managed and run through the fiscal sponsor of the GeoFight, called Greater Chicago Affordable Legal Services, NFP, with EIN number 33-3468109. Health information on this page is sourced from publicly available government toxicological profiles (ATSDR, U.S. EPA, CDC/NIOSH) and peer-reviewed scientific literature cited above. This content is for educational and informational purposes only. It does not constitute medical advice, diagnosis, or treatment. Always seek the advice of a qualified health provider with any questions regarding a medical condition. Contact or submission of information does not create an attorney-client relationship. Donations are tax-deductible to the extent permitted by law.