This document discusses health literacy and the use of mobile applications to improve consumer health. It defines health literacy and examines how low health literacy negatively impacts vulnerable populations. The document explores criteria for evaluating the credibility of online health information and provides examples of popular medical websites and mobile apps that can help with conditions like diabetes, heart disease, and weight management. It concludes that mobile health apps have potential to enhance health education and management if used in conjunction with a health care provider's guidance.