glutathione and silver fillings Antimicrobial performance of novel glutathione-conjugated nanoclusters (GSH@AgNCs) against Escherichia coli Staphylococcus aureus by membrane-damage and biofilm-inhibition mechanisms Safe Mercury Fillings Removal [Process
Description
Consequently, this may lead to a gradual lightening of the skin tone

Iyer L, Hall D, Das S, Mortell MA, Ramirez J, Kim S et al

Alzheimer's disease and parkinson's disease may result from reactivation of embryologic pathways silenced at birth

But, as mentioned, those studies were much too small to really know whether it is safe

Pictorial review of glutamate excitotoxicity: fundamental concepts for neuroimaging
