A good research question is essential to guide your research paper, project, or thesis. It pinpoints exactly what you want to find out and gives your work a clear focus and purpose.
you can start up with PUBMED which is a widely used database for literature search and enter your area of interest with AND/OR in between for e.g.
age AND hypertension
high cholesterol AND stroke OR MI
you will find the work of other people and then you can filter the newest results and see what is trending work also look for the related articles beside on the same page that will give you an idea of what is going on in the topic what they are working on and you will come up with a new idea to your project