Candi Castleberry-Singleton, Chief inclusion officer, UPMC and Yvonne Cook, Vice president of community and health initiatives,Highmark Blue Cross Blue Shield Every day, people make decisions about their health care. They read directions on a prescription label. They determine how much medicine to take or give to a loved one. They see TV ads for specific medications. They have conversations with health care providers or their health insurance companies. People need to be able to understand health information. It is essential to good health. Health literacy is the degree to which people get, use and understand basic health information and services to make good health decisions. But research shows that most health information is not presented in a way that many adults easily understand. According to the U.S. Department of Health and Human Services, more than one third of U.S. adults have difficulty with common health tasks, such as following directions on a prescription medicine label or sticking to a childhood immunization schedule using a chart. Not being able to do such tasks correctly can lead to serious health problems.