According to Japanese researchers, older adults with more gum inflammation are at risk for kidney problems. The study was done on 317 people who where all 75 years old.  At the start of the study each person had an oral exam. The researchers calculated how much of each person’s gum tissue was inflamed. The people were followed for 2 years. During that time, 45 of them developed kidney problems. Those with the most inflammation were more than twice as likely to develop kidney problems as the rest of the people in the study. Other studies have suggested a link between periodontal disease and kidney disease. A 2010 study focused on people with both conditions. It found that by having periodontal treatment also improved kidney disease symptoms  This study appears in the October 14th issue of the American Journal of Kidney Diseases.