Veteran Cancer & Toxic Exposure, Explained

Filing a VA disability claim for cancer is rarely simple. The hardest part is almost never the paperwork itself — it's connecting your diagnosis to the exposures and service history that caused it, in language the VA actually recognizes. Most veterans never get a clear, medically grounded explanation of how that link is established, why a nexus letter carries weight, or what separates a strong independent medical opinion from a generic template. These articles exist to close that gap.

Every piece here is written from the perspective of a board-certified radiation oncologist and retired U.S. Army Lieutenant Colonel — someone who has both treated cancer and worn the uniform. That dual lens matters. Law firms and claims agents can explain the process, but they can't speak to the biology of how Agent Orange, burn pit smoke, asbestos, PFAS, or contaminated water at Camp Lejeune translate into specific cancers years or decades later. We focus on the medicine first, then on how that medicine becomes evidence the VA can act on.

Expect practical, honest writing: what a nexus letter is and when you actually need one, how presumptive conditions differ from claims that require a medical opinion, what a complete claims-file review involves, and the questions worth asking your own doctors before you file. Nothing here is legal advice or a substitute for your own physician — it's background to help you make informed decisions about your health and your claim. New articles are added regularly as VA policy and the science of toxic exposure continue to evolve.