What did the world
put in you?

Type the year you were born. See the blood lead American children actually carried that year, and what the people who raised you, taught you and treated you carried in theirs.

Six steps. Takes about a minute.

Blood lead is recomputed from the CDC's own files (NHANES II, III and all twelve continuous cycles), survey-weighted with each cycle's correct sample weight. The pipeline reproduces four published CDC benchmarks.

No toddler survey covers births before 1971, 1978 to 1984, or 1992 to 1994. For those cohorts the page shows the youngest age at which they were ever measured instead of guessing, and says what that age was. The first US survey went into the field in 1976, three years after leaded gasoline peaked, which is why nobody born before 1971 has a childhood number at all.

The adults' birth years are arithmetic, not records: each profession's current mean age (NCES, AASA, FSMB, NCHS) applied to the year you were that age. That assumes those professions had a similar age structure then, which is an assumption rather than a measurement.

Notable people and birth dates come from Wikipedia and Wikidata, ranked by how many language editions cover them, which is a proxy for fame and not for importance.

None of this says anything about any individual. Population averages do not diagnose anybody.