In a study done from 2002 to 2010  the levels of vitamin B12 in the blood and the condition of the patient’s gums were checked.  The results have shown that participants which had the highest levels of vitamin B12, were those with the lowest levels of gum disease. In addition as the levels of Vitamin B12 in the blood decreased , the condition of the gums deteriorated. The reason for this finding is not clear yet and more research will be done.