Negative Ion also called anion, it is an atomic or molecular system with an excess of negative charge because of the gain of additional electrons.

The main advantages of negative ions for human body include cleansing of the blood, enhancement of the immune system, activation of cells, and adjustment of the autonomous nervous system. The interaction between negative ion and human body is part of science of electromedicine, or electromagnetic healing, or bioelectromagnetic healing.

The negative ion therapy includes negative ion clothings, negative ion bracelet, negative ion water, negative ion generators, negative ion air purifiers. It is great alternative medicine.