Negative Ions
Negative ions have been getting press because they’re believed to be good for your health. But what are negative ions, exactly? The theory behind negative ions is that they provide a calming effect on the brain. That’s why people are often drawn to the ocean, where negative ions are plentiful in the salty air. A study from researchers at the Federal University of Rio de Janeiro found that participants who inhaled negative ions for 30 minutes showed reduced levels of depression.