Short answers, pulled from the story.
The World Health Organization defined health in 1948 as a state of complete physical, mental, and social well-being rather than merely the absence of disease. This definition marked a fundamental shift from centuries of biomedical thinking that viewed health simply as the normal functioning of the body. Critics immediately labeled this broad definition vague and unmeasurable.
The World Health Organization revised its stance in 1984 to define health as the extent to which an individual or group is able to realize aspirations and satisfy needs. This revision framed health as a positive concept emphasizing social and personal resources rather than just physical capacities. The change shifted the concept from a static state to a dynamic resource for living.
The Lalonde report from Canada in 1974 identified three interdependent fields that determine an individual's health: the biomedical, the environmental, and the lifestyle. This report moved the conversation beyond hospital walls to recognize that factors such as clean water, adequate housing, and safe communities contribute significantly to good health. The report highlighted that these factors are especially important for infants and children.
Approximately 36 million people die each year from non-communicable diseases such as cardiovascular disease, cancer, diabetes, and chronic lung disease. Millions more succumb to communicable diseases like AIDS, tuberculosis, and malaria. Malnutrition remains a devastating issue with approximately 7.5 million children under the age of 5 dying from it.
Approximately twenty percent of all adults in the United States are considered diagnosable with a mental disorder. These conditions are the leading cause of disability in the United States and Canada. Examples of these disorders include schizophrenia, ADHD, major depressive disorder, bipolar disorder, anxiety disorder, post-traumatic stress disorder, and autism spectrum disorder.
Life expectancy has increased for Americans by thirty years since 1900. Worldwide life expectancy has increased by six years since 1990. This progress is achieved through the interdisciplinary categories of epidemiology, biostatistics, and health services as well as environmental health, community health, behavioral health, and occupational health.