Reality check: What you need to know about products promoted for Alzheimer's disease by Marilynn Larkin, MA

About 50 million people worldwide are living with dementia, making it a "global epidemic," according to the Chicago, Illinois-based Alzheimer's Association, whose mission focuses on Alzheimer's care, support and research. And yet, as nations ramp up efforts to support those with Alzheimer's, many people have misperceptions about the disease. For example, the Association found in a 2014 survey that 59% of individuals around the world incorrectly believe that Alzheimer's disease is a "typical part of aging" or that you have to have a family history of the disease to be at risk. The reality is, scientists are still not sure what causes the disease, though much research in this area is underway. Other misperceptions have to do with treatments. Currently, there are no treatments that can prevent or cure Alzheimer's disease or slow its course. Answers are coming, but we're not there yet, according to Heather Snyder, PhD, senior director of medical and scientific operations for the Alzheimer's Association.