Finding and Fixing Django N+1 Problems` is a common issue in Django where the Object-relational mapper (ORM) causes multiple queries to be executed, leading to performance issues. The problem arises from parent-child relationships, where each row in the results of an initial query spawns another query for each child object. This can lead to overwhelming the database and taking down the application. To fix this issue, Django provides two methods: `select_related()` and `prefetch_related()`. These methods allow the ORM to follow one-to-many relationships and add them to the SQL query as a JOIN, or perform separate queries for each object and then join them in Python. By using these methods, developers can reduce the number of database queries and improve performance. The example code snippet demonstrates how to use `prefetch_related()` to fix an N+1 problem in a Django application, resulting in a significant reduction in page load time and query count.