What's In A Breath of Fresh Air?

When ocean waves crash onto a beach, they could be doing more than entertaining beach goers. Moving water, moving air and sunlight all cause air molecules to break apart, releasing charged atoms, or ions, into the atmosphere. Some scientists claim that there is an abundance of negatively charged ions in sea air and that they could have health benefits which range from better circulation to improved moods. A lot of people have enough faith in these effects to purchase negative ion generators for their homes. But have these curative claims ever been satisfactorily verified?

Ocean air contains a high percentage of ions which a surfer will inevitably encounter in their quest to find the perfect wave. These mainly come from ions of sodium, magnesium, chloride and sulphate present in sea water.

Sodium, the main positive ion found in sea water, is also found in extra-cellular fluids in our bodies. These fluids, such as blood plasma, bathe cells and carry out important transport functions for nutrients and waste. Positive magnesium ions are also used by the body and are an ingredient of some medicines like Epsom salts, which are commonly used to treat aches and pains. Negative chloride ions also play an important physiological role in the central nervous system and in transporting protein around the body.

But do these ions actually change the way we feel? The theories advocating the medicinal properties of ions tend to focus on the effects of breathing them in. It is thought that the extra charge helps our bodies take in oxygen and thus increases oxygen flow to the brain.