BRAUN ET AL · NHANES

Childhood lead
quadruples ADHD risk.

Top blood-lead quintile children show 4.1x the ADHD prevalence of the bottom quintile. The relationship is monotonic and dose-responsive. There is no apparent safe lower bound.

4.1xtop vs bottom quintile
2006Braun publication
NHANESpopulation source
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01

What the data shows.

NHANES blood-lead in 4-15-year-olds, segmented into quintiles, correlated with parent-reported ADHD. The dose-response is smooth. Every increment of blood lead adds to the ADHD risk.

!

Dose-response, not threshold.

The historical framing was "below the action level is safe." The data does not support that. The bottom quintile still shows elevated risk versus the cleanest 5% of children.

02

What that means for a parent.

01

A blood test is a snapshot.

It tells you what is circulating today. Not what is in the bones.

02

The home test is upstream.

Find the source. Remove the dose. The blood result follows in 1-2 months.

03

Calcium, iron, vitamin D matter.

All three compete with lead at the gut absorption step.

TEST WITH KITS, NOT KIDS.
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