Laut einer Studie könnte die Bleiverschmutzung im antiken Rom den durchschnittlichen IQ um bis zu drei Punkte gesenkt haben

I’m fairly sure sanitation increased the population and life expectations. Considering the benefits, a 3 point IQ drop across the board didn’t exactly impact the empire. It does, however, dilute the notion of bringing in fresh blood to power the empire. Now, we can explain drops in performance of outsiders who became Roman residents. Nth generation, born and bred Romans could understandably be *off*. Caligula and the other nutters can’t blame the water.