Health literacy refers to the ability of individuals to obtain, process, and understand basic health information and services needed to make appropriate health decisions. It involves not only reading and writing skills, but also encompasses skills such as numeracy, communication, and digital literacy related to health care. Low health literacy can lead to misunderstandings of health information, difficulty navigating the healthcare system, and ultimately poorer health outcomes. Research in health literacy focuses on understanding the factors that contribute to low health literacy, developing interventions to improve health communication and education, and evaluating the impact of health literacy on health behavior and outcomes. Overall, the goal of health literacy research is to empower individuals to make informed decisions about their health and to improve the overall health of communities.