Health literacy of people living with mental illness or substance use disorders: A systematic review.

The review highlights the high rates of low health literacy within this population compared with general populations. Most studies used a functional health literacy measure, despite its limitations, with only a few using multidimensional measures. Overall, there is limited research examining the impact that this populations health literacy has on their recovery and how it affects them over time. The review emphasizes the importance of practitioners assessing and targeting health literacy needs when working with this population.