Baby boomers (born 1946-1964) grew up during peak use of leaded gasoline, exposing them to high environmental lead levels via car exhaust, paint, and pipes. This chronic exposure is linked to neurotoxic effects like reduced IQ, impulsivity, and aggression, correlating with elevated crime rates in their youth per studies like those by economist Rick Nevin. In old age, it may accelerate cognitive decline, hypertension, kidney disease, and dementia risk, as lead accumulates in bones and releases over time. Evidence is correlational, not purely causal.