Gum disease

Most people think bleeding gums are a dental problem. A new study suggests they could be connected to something much more serious. Researchers have found evidence that a bacterium commonly linked to gum disease may also play a role in dangerous calcium buildup inside the heart’s aortic valve. While the findings are still preliminary, they …

Every morning, millions of people perform a ritual so routine they barely think about it: brushing their teeth. What if that simple two-minute task was protecting something far more precious than your smile? Deep in a research facility in northern Japan, scientists have been watching brains shrink and memories fade, all while tracking something most …