If you are over 25, then perhaps traces of lead is not such a big deal. But if you ever have children aboard, you should be concerned. Lead is most harmful to developing brains and even low exposures can have serious consequences if the exposure is early in the child’s life. It just depends on how important a few or more of your grandchildren’s IQ points are to you. There is also the possible link between lead levels and anger and impulse control thus crime levels: youth crime nationwide began to drop around a decade after unleaded fuel was made mandatory.
https://www.motherjones.com/kevin-dr...ndup-for-2018/
https://www.google.com/amp/s/www.bro...ses-crime/amp/