Food for preventing reabsorbtion?

Do you know foods which prevent reabsorbing of heavy metals?

Fruit pectins?

What type of eating do you suggest for increasing bile excretion?

I pose those questions because I've read lot of info about chelation with ALA,DMPS,DMSA,MSM but nothing is mentioned about food and herbs in addition to removing the metals.

Everybody knows about milk thistle, taurine, lecithin... but is that all? Which is good or which is bad...

Every opinion is welcomed.