More to consider. I'm not sure it's the Ag that is actually doing the work, per'se. It very well might be other less noble metals/minerals, in the presents of Ag in a fluid medium, that are giving up an electron to Ag (galvanic coupling / corrosion factor), that is inducing a potential, that is really the basic, square one, of the positive effects. You would have to check blood serum count for other metals and minerals (of less nobility, before and after administrating CS. This theory would hold true for the stories of antiquity uses of silver as well. Also, those of you that might have studied ancient Egyptian high order priest and Pharos, know of the Wands of Horus. The rods that these elite held so tightly in their hands. Not a complete parallel, but close.
Of the various colloidal metals tried, silver seems to work best. (one of the highest noble metals - 3rd I believe) The old "silver coin in the milk pale", kept milk from souring. The silver rich river with therapeutic results for it's bathers. Varies positive results of CS keeping mold & bacteria from growing in kitchen counter top experiments with different types of food. ...Ron

