Lead is rated CRITICAL exposure concern (9.4/10) on the Read Off Label scale, derived from very strong evidence of very high harm magnitude and high historical exposure prevalence.

Lead

Toxins · Heavy metal / neurotoxicant

Critical exposure concern

Reviewed by Read Off Label · Last reviewed Jun 8, 2026 · How we grade

heavy-metal

9.4 / 10

CRITICAL

Mag 10 Ev 10 Prev 8

Bottom line

Read Off Label rates Lead a CRITICAL exposure concern (9.4/10) based on very strong evidence of very high harm magnitude and high historical exposure prevalence.

Lanphear 2018 reanalysis estimated ~400,000 annual US deaths attributable to legacy lead exposure even at 'non-dangerous' blood levels.

This entry describes an exposure rather than an added intervention.

What the evidence says

Lanphear 2018 reanalysis estimated ~400,000 annual US deaths attributable to legacy lead exposure even at 'non-dangerous' blood levels. Flint crisis returned lead to public awareness. Aviation gasoline (100LL) continues to deposit lead around general aviation airports. Turmeric (especially bright-yellow market varieties) has been repeatedly found adulterated with lead chromate.

Mechanism

Divalent cation; no safe level identified; primary current exposures: pre-1978 home lead paint, old plumbing (leaded brass, lead service lines), contaminated soil, imported spices/cosmetics/pottery, aviation gasoline

Reported exposure / mitigation context

Exposure-assessment methods include testing pre-1978 paint and tap water and imported spices or pottery and household dust

Citations

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Common questions

How harmful is Lead?: Lead is rated CRITICAL exposure concern (9.4/10) on the Read Off Label scale, derived from very strong evidence of very high harm magnitude and high historical exposure prevalence.
How does Lead cause harm?: Divalent cation; no safe level identified; primary current exposures: pre-1978 home lead paint, old plumbing (leaded brass, lead service lines), contaminated soil, imported spices/cosmetics/pottery, aviation gasoline
What exposure context is reported for Lead?: Lanphear 2018 reanalysis estimated ~400,000 annual US deaths attributable to legacy lead exposure even at 'non-dangerous' blood levels.

This is an independent synthesis of published research by a non-clinician. Scores are opinions supported by citations, not prescriptions. See the full disclaimer and methodology for how this score was produced and what it does and doesn't mean.