There are two reasons the fool on the Oprah Winfrey show turned blue. Reports say he was drinking a quart of the stuff a day. But it wasn't really colloidal silver he was drinking.
When you dig deeper, you find that he evidently wanted to drink a quart a day but it takes a long time to make so he got impatient and decided to speed up the process.
You see, the idea is to electrolyze pure silver in pure water so you end up with pure water full of pure silver ions.
But distilled water has almost no conductivity so, if your an idiot, every batch takes an inordinate amount of time to make. Anyway, he decided he would speed up the process by adding some salt to the water, thereby increasing it's conductivity, thereby reducing the time needed.
The problem with that idea is that the salt electrolyzes also. And what happens when you electrolyize salt? You get sodium ions and chlorine anions. The chlorine anions are negatively charged and the silver ions are positively charged so they migrate together and form silver chloride.
Now, I have little doubt that if you were stupid enough to drink a quart of silver chloride everyday, you would probably turn blue!
