Don’t go by the name, there is nothing negative or unhealthy about negative ions. Negative ions are beneficial for the human body while positive ions are harmful. In fact, you will find the highest concentrations of negative ions in natural, clean air. Ions are invisible charged particles in the air – either molecules or atoms, which bear an electric charge. Some particles are positively charged and some are negatively charged. To put it simply, positive ions are molecules that have lost one or more electrons whereas negative ions are actually oxygen atoms with extra-negatively-charged electrons. Negative ions are abundant in nature, especially around waterfalls, on the ocean surf, at the beach and widespread in mountains and forests.
They neutralize free radicals.
They revitalize cell metabolism.
They enhance immune function.
They purify the blood.
They balance the autonomic nervous system, promoting deep sleep and healthy digestion.
The most important benefit of negative ions is that they clear the air of airborne allergens such as pollen, mold spores, bacteria and viruses. Besides they also clear the air of dust, pet dander and cigarette smoke. Negative ions perform this function by attaching themselves to positively charged particles in large numbers and negatively charging those particles. As a result, these viruses, bacteria and pollen spores become too heavy to remain airborne and are thus prevented from entering your breathing passage where they can make you sick.