Exposures to Toxic Chemicals, Substances, Environments Organochlorine Pesticides, Herbicides, Fumigants in Hawaii. Endometrial Cancer and Military Service. Help navigate the VA toxic claims process.

Military installations in Hawaii—such as the Kunia Tunnel Facility and Pearl Harbor—have documented histories of environmental contamination involving industrial solvents, pesticides, and PFAS ("forever chemicals"), though direct, statistically proven causal links specifically establishing an increased risk of endometrial (uterine) cancer from Hawaii-specific military exposures remain limited in major epidemiological literature.

Veterans from sites like the Kunia Intel Facility have reported high rates of illness and cancer, attributing them to historical pesticide and chemical exposures on base.

Exposure to restricted-use pesticides (RUPs), herbicides, and fumigants is a growing public health concern in Hawaii due to their potential to increase the risk of hormone-driven gynecological malignancies, including endometrial cancer. Hawaii's history as a primary location for open-air experimental field testing of genetically engineered crops has led to the intensive, year-round spraying of restricted-use pesticides at rates significantly exceeding national averages.

: Endometrial cancer forms in the inner lining of the uterus (endometrium). Recent health data highlights that diagnoses and related rates are increasingly affecting younger individuals under the age of 50. 

Recent epidemiological and environmental research highlights how chemical agricultural practices, particularly historically high application rates on Oahu and other Hawaiian islands, directly expose local populations through drift, water contamination, and occupational handling.

The Scientific and Biological Link

Endometrial cancer develops in the lining of the uterus and is highly sensitive to hormone fluctuations, specifically elevated estrogen.

Endocrine Disruption: Many restricted-use pesticides and herbicides act as endocrine-disrupting chemicals (EDCs) or "xenoestrogens". They mimic natural estrogen in the body, causing abnormal cell growth in the endometrium.

Tissue Accumulation: Medical studies have shown that certain widely used herbicides, such as glyphosate, physically accumulate within human organs. Notably, research has found significantly higher concentrations of glyphosate directly inside endometrial tissue compared to blood serum, with elevated levels found in aggressive high-grade cancer patients.

Risk Breakdown: A comprehensive case-control study found that occupational exposure to herbicides increased the odds of endometrial cancer more than five-fold (OR = 5.25), followed closely by fungicides (OR = 4.40) and insecticides (OR = 2.08).

The Context in Oahu and Hawaii

Hawaii’s unique agricultural landscape, particularly its history as a testing ground for genetically engineered seed crops, has resulted in distinct exposure pathways:

• Water Contamination: A U.S. Geological Survey (USGS) study testing waters across Oahu, Kauai, Maui, and the Big Island detected over 117 different herbicides and pesticides. This pollution was widespread in streams, canals, and coastal shorelines where residents swim, introducing a persistent environmental exposure route.

Pesticide Drift & Violations: Commercial agrochemical corporations (such as Monsanto/Bayer) historically sprayed large volumes of restricted-use pesticides on corporate fields on Oahu. Legal actions and federal criminal guilty pleas revealed instances where banned or heavily restricted chemicals (like Penncap-M) were mismanaged, causing chemical drift into surrounding neighborhoods and exposing field workers without adequate protection window times.

Regulatory Responses: Recognizing these hazards, Hawaii implemented measures like Act 45, which banned restricted-use pesticides within 100 feet of school properties. Additionally, the Environmental Protection Agency (EPA) enacted a ban on the heavy endocrine-disruptor atrazine specifically covering Hawaii and U.S. territories due to its high toxicity and connection to reproductive cancers.

General Solvents and Fuels

Industrial solvents, heavy metals, and fuel combustion byproducts are widely recognized occupational hazards across various active-duty and domestic service

Environmental Chemicals and Endocrine Disruption

• Endocrine-Disrupting Chemicals (EDCs): Chemicals in the environment can interfere with the body's natural hormone systems. 

• Estrogen Influence: Endometrial cancer grows in the lining of the uterus and is strongly influenced by estrogen. 

• PFAS Exposure: Environmental exposures to substances like PFAS have also been associated with hormone-sensitive endometrial tissues and potential malignancy risk. PFAS ("forever chemicals") they were detected in Kunia Village drinking water wells (Well #3 and Well #4) on Oahu, Hawaii, leading to well shutdowns and bottled water distribution. 

  Schofield Barracks & Military Drivetrain: Preliminary assessments identified multiple Areas of Potential Interest (AOPIs) with PFOS and PFOA detections exceeding screening levels at Schofield Barracks. Investigations link potential sources to historical aqueous film-forming foam (AFFF) fire suppression usage and wastewater management tied to nearby Army installations

   Groups like Military Poisons argue that regional military facilities—including Schofield Barracks, Wheeler Army Airfield, and the Kunia reservation complex—contributed to the groundwater and wastewater contamination via historical aqueous film-forming foam (AFFF) usage or shared wastewater treatment systems. 

• Fuels: Direct links between environmental fuel spills or petroleum hydrocarbons in drinking water and endometrial cancer remain less defined in major epidemiological literature compared to disinfection byproducts and broader EDCs.

Endometrial Cancer and Military Service

• General Risk Factors: Endometrial cancer is primarily driven by hormone imbalances (specifically uncountered estrogen exposure), obesity, age, and genetic factors.

• Military Sexual Trauma (MST): Broader data on women veterans indicates that a documented history of MST correlates with a modestly elevated statistical risk for uterine and other gynecologic cancers, independent of specific chemical exposures.

Military service toxic exposures to Trichloroethylene (TCE) and Carbon tetrachloride in Hawaii are primarily associated with the contamination of groundwater at Schofield Barracks and Field Station Kunia (Operable Unit 2).

Endometrial Cancer Risk and Toxic Exposure

• Weak or Missing Direct Epidemiological Link: Extensive epidemiological studies on TCE and Carbon tetrachloride explicitly tie chronic exposure to kidney cancer, liver cancer, and non-Hodgkin lymphoma. There is currently very limited or inconsistent scientific evidence directly linking volatile organic compounds (VOCs) like TCE or carbon tetrachloride specifically to endometrial cancer. This does not discount the possibility.

Endocrine Disruption Pathways: Emerging research suggests that certain environmental toxic exposures—particularly Endocrine Disrupting Chemicals (EDCs) like PFAS (which are also under evaluation at Schofield Barracks) and old-era pesticides—interfere with estrogen signaling pathways, which can elevate the risk of hormone-sensitive gynecologic malignancies like uterine/endometrial cancer.

Co-Occurring Toxic Exposures at Hawaii Military Bases

When reviewing military service in Hawaii, health concerns often stem from a combination of severe facility conditions (like mold and humidity) and documented industrial or agricultural chemicals. Several bases in Oahu have histories of environmental contamination that carry known reproductive and gynecological risks:

Pesticides and Solvents: Sites like the Kunia Field Station, Schofield Barracks, and Kaneohe Marine Base have faced historical remediation for compounds like chlordane, trichloroethylene (TCE), and carbon tetrachloride. These industrial materials and legacy pesticides are explicitly linked to elevated risks for reproductive conditions, tissue abnormalities, and multiple cancer types.

Many older military facilities and barracks on Oahu, Hawaii, built between the 1930s and 1980s, contain Asbestos-Containing Materials (ACMs).

Health Risks & Safety

• Undisturbed Material: Asbestos materials in good condition are generally safe; the danger arises when materials are damaged, drilled, or remodeled, releasing invisible toxic fibers.

  The Department of Veterans Affairs (VA) recognizes uterine and endometrial cancers as presumptive conditions under the PACT Act for veterans exposed to airborne hazards and toxic substances during military service. 

  
  

Asbestos and Asbestos Containing Materials have been found and removed from the Kunia Tunnel location and Schofield Barracks buildings and housing developments over several decades.

Exposure to toxic heavy metals like lead and cadmium—which can be found in environmental sources such as old paint—is linked to an increased risk and progression of gynecological malignancies, including endometrial cancer.  Lead paint has been found and removed from abatement projects at the Kunia Tunnel and high concentrations of it was found in the soil of the air intake tunnel building 9 documented in multiple DoD site investigation reports.

Uterine (endometrial) cancer is explicitly covered as a presumptive reproductive cancer under the PACT Act for qualifying veterans with toxic exposures.

Veterans diagnosed with gynecological cancers, including uterine and endometrial cancers, following military toxic exposure may be eligible for health care and disability compensation through The Department of Veterans Affairs.

Endometrial Cancer and VA Benefits

• Gynecological Conditions: The PACT Act recognizes various genitourinary and gynecological cancers (including uterine and cervical cancers) for veterans experiencing military toxic exposures.

Disability Compensation: Active cancer diagnoses typically qualify for a temporary 100% VA disability rating during treatment and six months post-treatment.

VA Toxic Exposure Screenings & Disability Claims

If you served in the military and were exposed to environmental hazards in Hawaii, you can access specialized healthcare screenings and file for disability compensation.

1. How to Access the VA Toxic Exposure Screening

The VA provides a quick, 5-to-10-minute toxic exposure screening to all veterans enrolled in VA healthcare.

• What it is: A healthcare provider asks you questions about where you served and what hazards (like chemicals, burn pits, or contaminated water) you may have encountered.

• How to get it: You are automatically screened at least once every five years during routine VA appointments. You can also proactively request a screening at any time by contacting your VA primary care team or your local VA environmental health coordinator.

• Why it matters: It connects your exposure history directly to your medical records, ensuring your doctors monitor you for related health changes.

2. How to File a VA Disability Claim for Toxic Exposure

To receive monthly compensation and free medical care for exposure-related illness, you must file a disability claim.

• Step 1: Gather your evidence. You will need your military discharge papers (DD214), medical records showing your current diagnosis, and any service records proving you were stationed at a specific location in Hawaii during the time of contamination.

• Step 2: Establish a connection. Unless a condition is automatically "presumed" to be service-connected by law (like many conditions under the PACT Act), you must provide a "medical nexus"—a statement from a doctor asserting that your illness is at least as likely as not caused by your military toxic exposure.

• Step 3: Submit the claim. You can file your claim independently online at VA.gov using VA Form 21-526EZ.

• Step 4: Get free assistance. It is highly recommended to work with an accredited Veterans Service Officer (VSO) from organizations like the VFW, DAV, or American Legion and several others. They will help you gather evidence, structure your claim, and submit it for free.

A Toxic Exposure Risk Activity (TERA) claim allows veterans to receive VA disability compensation for chronic illnesses caused or worsened by exposure to toxic substances (such as industrial solvents, PFAS, pesticides, or burn pits) while on active duty, active duty for training, or inactive duty training.

Submit Your Claim

You have a few options for submitting your completed file:

1. Online (Fastest): Submit directly via the VA website disability portal.

2. By Mail: Send your completed paper forms to the VA Evidence Intake Center (PO Box 4444, Janesville, WI 53547).

3. With Professional Help (Recommended): Work with an accredited Veterans Service Officer (VSO). They can help you structure your arguments, pull service records, and submit the paperwork free of charge.  The DAV, The American Legion, VFW, Veterans Guardian to mention a few there are several.

Finally, navigating a toxic exposure claim with the Department of Veterans Affairs (VA) involves a structured process to prove your military service, your exposure, and your medical condition.

Thanks to recent legislation like the PACT Act, the process has been streamlined for many veterans exposed to burn pits, radiation, and hazardous materials like asbestos.

Here is how to navigate and file your claim effectively:

1. Check for Presumptive Conditions

The VA maintains a list of "presumptive conditions." If your illness is on this list and you served in specific locations during designated timeframes, you do not need to prove your service caused the illness—the VA automatically assumes it did.

• The PACT Act: Expands benefits for Gulf War and post-9/11 veterans, covering over 20 new presumptive conditions related to burn pits and toxic environments, including many reproductive, respiratory, and neurological cancers.

• Asbestos and Agent Orange: Separate presumptive lists exist for veterans exposed to asbestos (common in shipyards and older barracks) or Agent Orange (Vietnam Era).

• Action: Review the official VA PACT Act presumptive list to see if your diagnosis is automatically covered.

• Gather Your Evidence

• If your condition is presumptive, your primary task is proving where and when you served. If it is non-presumptive, you must provide medical evidence linking the illness to your service. Collect the following documents:

• Military Service Records: Your DD214 or separation papers showing your specialty (MOS/AFSC), service dates, and deployment locations.

• Medical Records: Hospital reports, doctor notes, and diagnostic tests (such as imaging or pathology reports) confirming your current diagnosis.

• The "Nexus" Letter (For Non-Presumptive Claims): If your condition is not on a presumptive list, you need a medical nexus letter from a doctor stating that it is "at least as likely as not" that your toxic exposure during service caused your illness.

• 3. File an Intent to File (Optional but Recommended)

• Before submitting your full application, you can submit an Intent to File. This sets an effective date for your benefits. If your claim is approved, the VA will pay you backdated compensation to the day you submitted the Intent to File, giving you up to a year to gather your evidence.