A new analysis of health records from thousands of people in the Massachusetts town Framingham shows that dementia rates in the United States are dropping.
Researchers at Boston University say there was an average reduction of 20 percent per decade since the 1970s. However, they are not sure why the numbers have gone down.
It is believed that differences in blood pressure and cardiovascular health treatment could play a role. "We are doing something right. So if we understand what we are doing right, we can perhaps activate it," says Dr. Sudha Seshadri.