They are an unnecessary and mostly preventable potential hazard to health , which can have a large impact on how individuals gain and lose weight .
People interact with them on a daily basis , both intentionally and unintentionally , at work , school and home .
People are an unnecessary and mostly preventable potential hazard to health , which can have a large impact on how individuals gain and lose weight .
People interact with them on a daily basis , both intentionally and unintentionally , at work , school and home .