Before revision: While many claim that negative ion therapy has no measurable therapeutic effects, and is to be considered pseudoscience, the majority of studies currently seems to contradict this as they find clear evidence of beneficial effects on cognition and URL
After revision: While many claim that negative ion therapy has no measurable therapeutic effects, and is to be considered pseudoscience, the majority of studies currently seems to contradict this as they find clear evidence of beneficial effects on cognition and mood.