Sunday, April 13, 2014

Nearly 9 out 10 Adults May Lack the Skills Needed to Manage their Health and Prevent Disease


What is health literacy?

Health literacy is the degree to which individuals have the capacity to obtain, process, and understand basic health information and services needed to make appropriate health decisions.1
Health literacy is dependent on individual and systemic factors:
  • Communication skills of lay persons and professionals
  • Lay and professional knowledge of health topics
  • Culture
  • Demands of the healthcare and public health systems
  • Demands of the situation/context
Health literacy affects people's ability to:
  • Navigate the healthcare system, including filling out complex forms and locating providers and services
  • Share personal information, such as health history, with providers
  • Engage in self-care and chronic-disease management
  • Understand mathematical concepts such as probability and risk
Health literacy includes numeracy skills. For example, calculating cholesterol and blood sugar levels, measuring medications, and understanding nutrition labels all require math skills. Choosing between health plans or comparing prescription drug coverage requires calculating premiums, copays, and deductibles.
In addition to basic literacy skills, health literacy requires knowledge of health topics. People with limited health literacy often lack knowledge or have misinformation about the body as well as the nature and causes of disease. Without this knowledge, they may not understand the relationship between lifestyle factors such as diet and exercise and various health outcomes.
Health information can overwhelm even persons with advanced literacy skills. Medical science progresses rapidly. What people may have learned about health or biology during their school years often becomes outdated or forgotten, or it is incomplete. Moreover, health information provided in a stressful or unfamiliar situation is unlikely to be retained.

Why is health literacy important?

Only 12 percent of adults have Proficient health literacy, according to the National Assessment of Adult Literacy.  In other words, nearly nine out of ten adults may lack the skills needed to manage their health and prevent disease.  Fourteen percent of adults (30 million people) have Below Basic health literacy.  These adults were more likely to report their health as poor (42 percent) and are more likely to lack health insurance (28 percent) than adults with Proficient health literacy.6
Low literacy has been linked to poor health outcomes such as higher rates of hospitalization and less frequent use of preventive services (see Fact Sheet: Health Literacy and Health Outcomes). Both of these outcomes are associated with higher healthcare costs.


Key research study findings on the relationship between health literacy and health outcomes:

Use of preventive services

According to research studies, persons with limited health literacy skills are more likely to skip important preventive measures such as mammograms, Pap smears, and flu shots.1 When compared to those with adequate health literacy skills, studies have shown that patients with limited health literacy skills enter the healthcare system when they are sicker.2

Knowledge about medical conditions and treatment

Persons with limited health literacy skills are more likely to have chronic conditions and are less able to manage them effectively. Studies have found that patients with high blood pressure,3 diabetes,3-5 asthma,6 or HIV/AIDS7-9who have limited health literacy skills have less knowledge of their illness and its management.

Rates of hospitalization

Limited health literacy skills are associated with an increase in preventable hospital visits and admissions.10-13 Studies have demonstrated a higher rate of hospitalization and use of emergency services among patients with limited literacy skills.12

Health status

Studies demonstrate that persons with limited health literacy skills are significantly more likely than persons with adequate health literacy skills to report their health as poor.10, 12 14

Healthcare costs

Persons with limited health literacy skills make greater use of services designed to treat complications of disease and less use of services designed to prevent complications.1, 11-13 Studies demonstrate a higher rate of hospitalization and use of emergency services among patients with limited health literacy skills.10-13 This higher use is associated with higher healthcare costs.15 16,

Stigma and shame

Low health literacy may also have negative psychological effects. One study found that those with limited health literacy skills reported a sense of shame about their skill level.17 As a result, they may hide reading or vocabulary difficulties to maintain their dignity.18

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