Mechanisms are provided to implement an answer change notification system. The mechanisms receive a change operation to change a portion of a user profile data structure associated with a user and identify a first entry in a question and answer (QA) log data structure, corresponding to the user, having an indicator identifying a previous answer of the first entry as being dependent upon information in the user profile data structure. The mechanisms resubmit a question of the first entry to a question and answer (QA) system to generate a new answer to the question in response to identifying the entry. The mechanisms receive the new answer from the QA system and output, to a client device associated with the user, a notification identifying the new answer to the question in response to receiving the new answer.