Negative ion generators are electrical devices that create charged particles called negative ions, resulting in "ionized air."
Negative ion generators are marketed to improve health by reversing negative ion depletion. They also claim to filter out smoke, dust, viruses, and bacteria from the air.
People use negative ion generators for hay fever, asthma, depression, flu, and many other conditions, but there is not good scientific evidence to support these uses.
Negative ion generators are not regulated by the US FDA. Don't confuse negative ion generators with ozone therapy. These are not the same.
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