I honestly don't know why people get different results. I personally suspect that it has to do with contaminants on feet, foot powder, laundry detergent, chlorine, body salt, etc. I'm sure it doesn't take much to get some interesting effects in electrified water.

When we did our experiments, we got the similar-looking water after each session with only small differences, but there was foam, green stuff, black stuff, dark gunk, black specks, and even a greasy ring around the foot tub, and this when no feet were ever put in it.

I am open to the idea that something may be drawn out of the skin in small amounts, such as salts, sugars, or other components that probably don't affect health much. I'm just skeptical about heavy metals after doing our experiments.

http://herballure.com/Studies/IonicFootSpa.html

I know many people who say they feel better after having the "treatments" for a week or two, but I know they also have some excellent liquid minerals before each session. I wonder if they would feel differently just having the liquid minerals without the foot bath. I wish I had the time to do some more experiments <img src="/ubbthreads/images/graemlins/frown.gif" alt="" />