The Parazapper is a fraudulent device that has been marketed as a cure for athelete's foot, diarrhea, HIV, and just about any other illness that can attributed to bacteria, fungus, or critters invading the body. It has been around, either on the market or touted as a do-it-yourself cure, for years. In essence, a parazapper is a metal rod connected by wires to a battery. You use it to zap yourself and the critters that have invaded you, thereby effecting a cure.
I'm not even going to bother with the usual blather about "no scientific evidence," yadda yadda. This product is just pure cr@p. People who market it are preying upon sick people, trying to take their money while promising them the impossible.
I was surprised to find a notice in my mailbox today that the FDA had had to send a warning letter out to a company that was actually marketing this product. Not surprised that the FDA sent the warning, but that there was actually a need to. Do Americans have so little understanding of science that they are gullible enough to buy this stuff?