Herbert Needleman

Herbert Needleman was an American pediatrician and researcher whose studies linked low-level lead exposure in children to impaired cognitive development and behavior.

Lead poisoning: A toxic condition caused by lead entering the body, often damaging the nervous system and other organs. Needleman’s work showed that harm could occur without the acute symptoms traditionally used to diagnose it.
Dentine lead: Lead incorporated into tooth dentine during its formation, preserving a record of past exposure. Needleman measured lead in shed teeth to estimate children’s earlier exposure.
Needleman 1979 tooth-lead study: A study relating lead levels in children’s shed teeth to cognitive and behavioral measures. This influential study reported poorer outcomes among children with higher tooth-lead concentrations.
David Bellinger: An American neuropsychologist and epidemiologist known for research on environmental exposures and child development. Bellinger extended research on lead’s neurodevelopmental effects and collaborated with Needleman.
Blood lead level: The concentration of lead measured in a sample of blood. His findings helped challenge the idea that only high measured levels posed risks to children.
Tooth lead analysis: A method for estimating past lead exposure by measuring lead in teeth. This method let Needleman examine exposure that blood tests taken later might miss.
Needleman 1990 follow-up study: A follow-up study examining later outcomes among boys previously assessed for lead exposure. It associated childhood lead exposure with later attention, behavior, and school-related difficulties.
Philip Landrigan: An American pediatrician and epidemiologist whose work addresses children’s environmental health. Landrigan and Needleman were prominent physician-scientists arguing for prevention of childhood lead exposure.
Childhood lead exposure: Contact with lead during childhood through sources such as dust, paint, soil, or water. This was the exposure whose developmental effects Needleman investigated.
Cohort study: An observational study that follows or compares groups defined by shared characteristics or exposures. His tooth-lead research compared children with differing exposure histories and developmental outcomes.

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