What Is Health Literacy Good communication is important for your health, and the health of your family. What Can You Do Asking questions can help you to understand what you need to do, and can help to prevent medical errors. What Is Clear Health Commuication The definition of health literacy places emphasis on the individual’s abilities. Low Health Literacy is Very Common According to a large national study, more than 1 in 3 adults in America have low health literacy. Health Literacy - How Does Low Health Literacy Relate To Health Low health literacy makes it harder to understand and follow the advice that doctors give.