Given the sharp decline in blood lead levels after the phase-out of leaded gasoline, lead exposure may seem to be a relic of the past. The reality is quite different, however. In a recent study by Bjorn Larsen and Ernesto Sánchez-Triana, the cost of lead exposure to the global population has been set out in data that are nothing short of shocking. The Study – What Did They Actually Do? Let's dissect it. Larsen and Sánchez-Triana intended to know the worldwide toll and economic cost of lead expos