I'm glad people are feeling better and I love seeing people recover from health conditions. I would just be aware that taking mineral supplements—like those given before a foot bath—could also make a person feel better.

Additionally, it's not probable that flecks of metal the size of those seen in the bottom of a tub after a foot bath (here) could travel through human skin.

I'm not trying to offend anybody. I'm just attempting to take a careful look at the foot spa phenomenon from a practical sense point of view.

If it's working for people, that's great. It's just that our tests show nothing significant, and that other factors (mineral supplements) could be tried by a person without a foot spa to see if people feel better as well.

I'm also careful about new ideas like this because we don't know the long-term effects of exposing your body to unnaturally-large voltages.