How can kids get lead poisoning from wooden toys?

From the paint. Lead poisoning comes from mouthing the toys that are painted with lead paint. Be careful with toys made outside the US. In the past, toys from China and other countries, sold here.have had high lead levels.
The paint. If the toy is painted it may be lead based if it comes from china.
Paint. By putting the toys in their mouths and chewing on them. Many old wooden toys have lead-based paint.