PubMed is organized by subject headings. These subject headings are called MeSH and are attached to every article, book, clinical trial and study.
Medical subject headings are a controlled vocabulary used to index scholarly journals in nursing and allied health and are easy to use.. Knowing and using the MESH terms increase the accuracy and focus of a search.
There are several ways to check your search terms to see if they are in the MESH index. One method is called the MeSH on Demand. You enter the term in the MeSH Browser. For instance, if you are searching for Diabetes Mellitus (Type 2). See example below.
There is a second method of finding the proper search term in the MeSH browser. Using the same example as above, type in your term. Click on EXACT MATCH.