Health literacy is the ability to understand your health, medical care, and overall wellness. However, research shows that many adults find health information hard to understand. This includes what doctors, nurses, pharmacists, and other health care professionals say, written medical instructions, and health insurance forms. Even when people have good access to health services, lack of information can make it difficult for patients and families to properly manage their health. The September 14, 2011, issue of JAMA includes an article about health literacy in patients.