An Updated Lead-Crime Roundup (2018)

A Brief Summary of Lead and Crime

The lead-crime hypothesis is pretty simple: lead poisoning degrades the development of childhood brains in ways that increase aggression, reduce impulse control, and impair the executive functions that allow people to understand the consequences of their actions. There are three types of research that confirm the connection between lead and crime:

No single study is proof of the lead-crime hypothesis. Violent crime began to drop in the United States in the early 90s, about 20 years after we began reducing the lead content of gasoline.

Source: www.motherjones.com