A system that includes one or more processors and one or more memories storing code that is executable by the one or more processors to: access a data log corresponding to a diet of a user over a predetermined period; determine a diet context for the user based at least in part on the data log; analyze the data log to determine a variance in the diet context; determine a potential medical issue in response to the variance; and generate predictive feedback for the user in response to the potential medical issue.