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Legacy of Our Veterans' Military Exposures
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Chemical Abstract Service (CAS)

Chemical Abstract Service (CAS)

CAS is world’s authority for chemical information CAS is the only organization in the world whose objective is to find, collect and organize all publicly disclosed substance
Sarin Gas

Sarin Gas

Facts About Sarin The National Institute for Occupational Safety and Health (NIOSH)

Agent Blue

Agent Blue is one of the "rainbow herbicides" that is known for its use by the United States during the Vietnam War.

Agent Purple

Agent Purple is the code name for a powerful herbicide and defoliant used by the U.S. military in their herbicidal warfare program during the Vietnam War.
There are two broad types of radiation, non-ionizing and ionizing. Ionizing radiation sends out extremely high energy, which may pose a health risk. Learn more
For Veterans who participated in a radiation-risk activity during service (including "Atomic Veterans"), VA assumes that certain cancers are related to their exposure. These are called "presumptive diseases."
  • Related Diseases

    Related Diseases Find out what diseases are related to radiation exposure. Learn more
  • Were You Exposed?

    Radiation Exposure Determine whether you were exposed to radiation during service. Learn more
  • Research Studies

    Research Studies Find out what radiation-related research is completed and ongoing. Learn more
  • VA Benefits

    VA Benefits View benefits for Veterans exposed to radiation and their survivors. Learn more
  • Provider Resources

    Provider Resources VA has resources to help providers care for Veterans. Learn more
  • Publications

    Publications View publications and other related materials. Learn more
Ionizing radiation exposure comes from a variety of sources, including nuclear weapons testing or other activities during military service. Learn more

Ionizing Radiation Registry

VA offers a free Ionizing Radiation Registry health exam to all eligible Veterans to alert them to possible long-term health problems. Learn more


Agent Orange

Exposure to Agent Orange by Location

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