Do you ever let your baby or toddler play with your key ring? You may want to rethink that. Turns out that typical household brass keys contain lead – in amounts significant enough to be very dangerous for your baby. Studies initiated by the California Attorney General showed that handling average household brass keys exposes a person to lead at 19 times the allowable daily exposure threshold established by Prop 65. Just handling the keys is the problem (let alone mouthing!), because lead is transfered to the hands where it can find its way into your mouth or baby’s.
Bottom Line: Definitely don’t give baby the keys. And, pregnant and nursing women should always wash their hands after handling household keys.