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    Negative Ions Create Positive Vibes

    There's something in the air that just may boost your mood -- get a whiff of negative ions.
    By
    WebMD Feature

    May 6, 2002 -- There's something in the air and while it may not be love, some say it's the next best thing -- negative ions.

    Negative ions are odorless, tasteless, and invisible molecules that we inhale in abundance in certain environments. Think mountains, waterfalls, and beaches. Once they reach our bloodstream, negative ions are believed to produce biochemical reactions that increase levels of the mood chemical serotonin, helping to alleviate depression, relieve stress, and boost our daytime energy.

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    And these are a few of the reasons we see negative-ion generators being sold in stores and all over the Internet, but do they really work as well as antidepressants? Can they also relieve allergies by filtering out dust mites and dander?

    It's too early to tell for sure, experts tell WebMD, but that's not to say there is not some sound science behind the concept.

    Science 101

    Ions are molecules that have gained or lost an electrical charge. . They are created in nature as air molecules break apart due to sunlight, radiation, and moving air and water. You may have experienced the power of negative ions when you last set foot on the beach or walked beneath a waterfall. While part of the euphoria is simply being around these wondrous settings and away from the normal pressures of home and work, the air circulating in the mountains and the beach is said to contain tens of thousands of negative ions -- Much more than the average home or office building, which contain dozens or hundreds, and many register a flat zero.

    "The action of the pounding surf creates negative air ions and we also see it immediately after spring thunderstorms when people report lightened moods," says ion researcher Michael Terman, PhD, of Columbia University in New York.

    In fact, Columbia University studies of people with winter and chronic depression show that negative ion generators relieve depression as much as antidepressants. "The best part is that there are relatively no side effects, but we still need to figure out appropriate doses and which people it works best on," he says.

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