Did you know that, according to the Journal of the American Dental Association, about 42% of U.S. adults over the age of 30 have gum disease? Sadly, one of the most common causes of gum disease is poor oral hygiene. The first stage of gum disease is called gingivitis. At this early stage, you may notice red, swollen, or bloody gums. Gingivitis is easily treated and reversed. However, if it is left untreated, it progresses to a more serious form, called periodontitis, which can result in tooth loss, or worse. If you learn the symptoms and get treatment early, you can prevent serious problems later.