Lead
Heavy metalIARC Group 2AA heavy metal in ammunition primers, firing-range air, fuels, paints, and industrial work.
Where it comes from in service
Firing ranges (especially indoors), armorers and range cadre, demolition, vehicle/aircraft maintenance, and lead-based paint on older installations and ships.
How it harms the body
Lead has no known safe level. It blocks ALAD (delta-aminolevulinic acid dehydratase), an enzyme the body needs to build hemoglobin (the oxygen carrier in red blood cells) — which is why a blood lead test is often read alongside blood-count markers, not alone.
Because it mimics calcium, lead crosses into bone and the brain and disrupts the calcium-dependent signaling those tissues rely on.
How long it stays in you
Stored in bone with a half-life measured in decades. It can re-enter the blood years later during bone turnover — aging, illness, or calcium stress — which is why a 'normal' blood lead does not rule out a lifetime burden.
Where it goes — tap an organ to go deeper
ATSDR links lead to chronic kidney disease, high blood pressure and other cardiovascular effects, and nervous-system and cognitive effects; it is also studied in peripheral neuropathy. Confirm how any of these applies to your claim with your VSO.
A high bone-lead burden can keep seeding the bloodstream for years, contributing to rising blood pressure, declining kidney function, and cognitive or nerve symptoms that are easy to mistake for ordinary aging.
What to ask your clinician about
- •Blood lead (reflects recent exposure)
- •Bone-lead K-XRF scan where available (stored lead)
- •Kidney function (eGFR, creatinine) and blood pressure
Bring this to your clinician and your VSO — they decide what testing and care, if any, is right for you. For general, whole-person ways to support your body, see Whole health.
Sources: ATSDR ToxFAQs: Lead · IARC Monographs Vol. 87 · VA / ATSDR. Drafted from the government's and science's own record — VA presumptive lists (PACT Act, 38 CFR, Camp Lejeune), ATSDR ToxFAQs, IARC, and NTP. Sources are cited on every page, and this library has not yet been reviewed by a named clinician or toxicologist. This is documentation to bring to your clinician and VSO — not a diagnosis, a treatment plan, or a determination of service connection. Veterans Crisis Line: dial 988, then press 1.