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The major source of lead exposure during the 20th century was leaded gasoline. Proponents of the lead–crime hypothesis argue that the removal of lead additives from motor fuel, and the consequent decline in children's lead exposure, explains the fall in crime rates in the United States beginning in the 1990s. [4]
The former widespread use of toxic lead in gasoline and paint – and the subsequent lead poisoning of children as a result – has been hypothesized as contributed to a higher crime rate among juveniles (i.e. the lead-crime hypothesis).
The lead–crime hypothesis proposed a link between elevated blood lead levels in children and later increases in crime. Children exposed to forms of lead at young ages are hypothesized to be more likely to develop learning disabilities, attention deficit hyperactivity disorder, and problems with impulse control.
Reduction in the average blood lead level is believed to have been a major cause for falling violent crime rates in the United States. [125] A statistically significant correlation has been found between the usage rate of leaded gasoline and violent crime: the violent crime curve virtually tracks the lead exposure curve with a 22-year time lag.
[5] [6] Dilulio has since disavowed the theory. [1] There are many alternative explanations to the rise in crime until the 1990s and the subsequent drop. One explanation, supported by American journalist Kevin Drum, is the lead–crime hypothesis, which says that the use of leaded gasoline could have caused the high crime rates in the 1980s and ...
The lead–crime hypothesis suggests the removal of lead from gasoline and paint reduced lead exposure, especially in children born after 1978. Scholar Mark A.R. Kleiman writes: "Given the decrease in lead exposure among children since the 1980s and the estimated effects of lead on crime, reduced lead exposure could easily explain a very large ...
Schwab originally recognized No Labels Kansas in January after it submitted signatures of registered voters equal to 2% of votes cast in the 2022 election for governor – a little over 20,000 votes.
In environmental terms, the theory that crime rates and lead exposure are connected, with increases in the latter causing increases in the former, has attracted much scientific analysis. In 2011, a report published by the official United Nations News Centre remarked, "Ridding the world of leaded petrol, with the United Nations leading the ...