VA Update Links Blast Exposure With Long-Term Health Conditions

On October 30, 2026, the VA Office of Research and Development highlighted research linking blast exposure with later health diagnoses in veterans. Its research roundup reported higher rates of several conditions among veterans with blast-related injury, including seizures and hepatitis C.

The underlying research examined veterans enrolled in the Millennium Cohort Study. As described in Healio, it compared blast-exposure measures with diagnoses recorded during years of Veterans Health Administration care. The findings bring attention to health beyond the immediate injury and beyond brain health alone.

Why does blast history matter beyond the initial injury?

Study author Sarah L. Martindale described blast exposure as a “whole-body issue” in her comments to Healio. Martindale is a research health scientist with the Salisbury VA Health Care System. She said the findings could help clinicians consider veterans’ long-term health and identify opportunities to address problems earlier.

That perspective matters because the diagnoses highlighted in VA’s roundup span several areas of health. They include neurologic conditions alongside cardiovascular, metabolic and respiratory diagnoses. The clinical conversation suggested by this research is therefore broader than a discussion focused only on an earlier head injury.

For veterans, the practical relevance is keeping service-related exposure history connected to ongoing care. For active personnel, the forward-looking issue is how that history will remain available and useful after service. These are questions about continuity rather than reasons to expect a particular illness.

BattleVet’s coverage of military exposures across the course of long-term health addresses this broader connection. Here, the immediate editorial takeaway is specific: blast history deserves a place in a health conversation without becoming the assumed explanation for every later concern.

What did the study actually measure?

According to Healio, the researchers examined electronic health records for 36,641 veterans enrolled in the Millennium Cohort Study. Health diagnoses were recorded from 2013 through 2021. Participants had used Veterans Health Administration care for at least two years during the follow-up period.

The study used different measures for high-level and low-level blast exposure. High-level exposure was self-reported and included exposure to explosive devices or land mines. Low-level blast risk was estimated through military occupation.

Healio reported the following exposure categories:

• 10.6% of participants reported high-level blast exposure.
• 17.4% had an occupation considered high risk for low-level blast exposure.
• 4.8% had both.

These figures describe exposure categories within the study cohort. They are not the percentages of participants who developed the health conditions discussed in the findings.

Healio also reported that the analyses adjusted for age, sex and number of days deployed. The cohort was 68.5% men and 70.2% White. In addition, 56.2% were born after 1979.

Those details help define the population behind the findings. This was an analysis of recorded diagnoses among veterans who met the study’s care-use requirements. It was not a survey of every person who had experienced a military blast.

Which health conditions were reported more often?

VA’s research roundup provided specific higher-rate figures for two conditions. It reported that rates of hepatitis C were 89% higher and rates of seizures were 79% higher among veterans with blast-related injury.

The same VA summary listed higher rates of other diagnoses across several health categories:

• Neurologic: nerve damage.
• Cardiovascular and metabolic: angina, high cholesterol and diabetes.
• Respiratory: chronic bronchitis and emphysema.
• Infectious: hepatitis B and bladder infections.

Healio’s account likewise described associations between high-level blast exposure and several chronic conditions. Those included seizures, neuropathy and cardiovascular diagnoses. Neuropathy is the term used in that report for the nerve-related finding.

The important pattern is the breadth of the diagnoses described. Martindale’s “whole-body issue” framing reflects that spread across different areas of health. It does not mean that the study identified a single process explaining every association.

How should the evidence be interpreted?

The findings show associations rather than proof that blast exposure caused each condition. They also do not establish why hepatitis C or any other diagnosis occurred more often. Adjustment for the reported factors does not turn the analysis into proof of causation.

The exposure measures have distinct limitations. High-level exposure relied on self-report. Occupational classification was a proxy for low-level blast exposure and could not capture each person’s exposure history, Martindale told Healio.

The VA percentages also need careful reading. They describe higher rates in a comparison, not the percentage of exposed veterans who had either condition. The roundup did not provide numerical effect estimates for every other diagnosis it named.

Stroke requires a separate distinction. VA’s roundup included stroke among diagnoses it described as occurring at significantly higher rates. Healio’s report said stroke was more likely in the high-level blast group but that the association was not statistically significant. That difference prevents presenting stroke as an established finding of the same strength as the other reported associations.

Finally, the cohort’s composition and care-use requirements define the population studied. Its results should not be presented as measurements of all active personnel or all veterans.

Does this change screening or follow-up decisions?

The clearest implication is a stronger reason to include blast history in long-term clinical conversations. Martindale told Healio that better evidence could support “exposure-informed surveillance and prevention.” Her emphasis was on identifying opportunities earlier rather than waiting until chronic disease is established.

That is a direction for care and research, not an announced screening schedule. The update does not establish a universal testing package or a diagnosis-specific screening interval for everyone with blast exposure. Personal decisions about evaluation belong with a qualified clinician who can consider the individual’s history and current concerns.

A practical interpretation centers on three parts of care:

• Exposure history as context. Previous blast exposure can be included in the information considered during a broader health assessment.
• Current concerns as the focus. The reported associations give clinicians context for discussing health without replacing an individual assessment.
• Follow-up based on clinical judgment. Testing and monitoring decisions remain personal rather than being determined by the study’s diagnosis list alone.

For veterans moving between care settings, the relevant editorial principle is continuity. Exposure history belongs alongside the rest of the medical history rather than in a separate conversation that ends after an injury assessment. This fits BattleVet’s focus on maintaining a connected healthcare team after service.

The findings also reinforce a distinction between awareness and action. Knowing that a study reported more diagnoses is useful context for a consultation. Selecting an evaluation requires a clinician to consider the person rather than apply a group-level result as an individual prediction.

For physical performance, the update provides no new training or return-to-activity protocol. Its contribution is to the health context surrounding long-term capability. A research report about later diagnoses should inform the medical conversation rather than be converted into an unsupported exercise restriction or performance rule.

The useful shift is therefore broader attention with individualized decisions. Blast exposure is relevant history to bring into care planning. The evidence does not turn that history into a predetermined health outcome.

What should future veteran health research answer?

Martindale told Healio that future research should better characterize lifetime blast exposure. She identified frequency and intensity as important details, along with proximity and context. That would move research beyond relying on an occupational category to describe an individual’s experience.

Her comments point toward a more specific research agenda: understanding exposure well enough to make it useful in prevention and follow-up. The next questions concern which exposure details are most informative and whether they can support clearer clinical decisions.

For veteran healthcare, the meaningful endpoint would be more than a longer list of associated diagnoses. It would be evidence showing how exposure history can guide an appropriate evaluation and improve the timing of care. That is the practical standard against which exposure-informed surveillance should be judged.

The VA roundup gives clinicians and veterans a reason to keep blast history in view across long-term health discussions. Will future studies turn a more complete exposure history into clearer, tested approaches to prevention and follow-up?

Sources

1. VA Research Wrap Up: New findings on colorectal cancer, blast exposure and Alzheimer's
2. High-level military blast exposure associated with neuropathy, seizures, other conditions