The MSU Libraries subscribes to a couple of map applications that allow you to visually compare all kinds of variables in different places. Policy Map has an especially good set of health-related data layers (and is somewhat easier to use). These may help you develop a research question--they're fairly easy to use, and most students find themselves curious about the differences they find between different places.
Here is also the library guide on Geographic Information Systems, which links to many more geographic resources.
There are also many data visualization apps or functions on health data government websites. Here are a few:
Agency for Healthcare Research and Quality Data Tools
National Center of Health Statistics Data Visualizations
Here is the library's guide for Health Data and Statistics, which has more sources.
