The sixth leading cause of death in the United States is Alzheimer’s disease. You likely know someone with, or have lost someone to this awful disease. As age expectancy rises, it can be a real concern whether you, or someone you love, is likely to develop Alzheimer’s.The good news is that scientists and doctors are working hard to research the cause – and find a cure. Additionally, there are a number of risk factors associated with Alzheimer’s disease which you can counteract through diet, exercise, and changes to the way you sleep.One of the risk factors may surprise you: gum disease.