T.V.
B.-
If you are concerned there are some very good safe herbs to get for your son which can help escort the lead out.
There are really good oral chelation products out there. All it is is an amino acid called EDTA. Go to your local health food store (preferably a mom and pop owned). Also you can help support his liver by giving him a tincture made from milk thistle and dandelion by NOW.
These two things alone will help immensely-so will juicing greens but they have to be organic.
Let me know if you have more questions.
T.
Detox Coach