Whois & Analysis for joinallofus.org

The United States of America (USA), commonly known as the United States (U.S) or America, is a constitutional federal republic composed of 50 states, a federal district, five major self-governing territories, and various possessions.

Knowledge is a familiarity, awareness or understanding of someone or something, such as facts, information, descriptions, or skills, which is acquired through experience or education by perceiving, discovering, or learning.

A disease is a particular abnormal condition, a disorder of a structure or function, that affects part or all of an organism.

The study of disease is called pathology which includes the study of cause.

Disease is often construed as a medical condition associated with specific symptoms and signs.

It may be caused by external factors such as pathogens, or it may be caused by internal dysfunctions particularly of the immune system such as an immunodeficiency, or a hypersensitivity including allergies and autoimmunity.

Public health refers to "the science and art of preventing disease, prolonging life and promoting human health through organized efforts and informed choices of society, organizations, public and private, communities and individuals." It is concerned with threats to health based on population health analysis.

The population in question can be as small as a handful of people, or as large as all the inhabitants of several continents (for instance, in the case of a pandemic).

The dimensions of health can encompass "a state of complete physical, mental and social well-being and not merely the absence of disease or infirmity," as defined by the United Nations' World Health Organization.

Public health incorporates the interdisciplinary approaches of epidemiology, biostatistics and health services.

Environmental health, community health, behavioral health, health economics, public policy, mental health and occupational safety and health are other important subfields.

Health is the level of functional and metabolic efficiency of a living organism.

In humans it is the ability of individuals or communities to adapt and self-manage when facing physical, mental or social changes.

The World Health Organization (WHO) defined health in its broader sense in its 1948 constitution as "a state of complete physical, mental, and social well-being and not merely the absence of disease or infirmity." This definition has been subject to controversy, in particular as lacking operational value, the ambiguity in developing cohesive health strategies, and because of the problem created by use of the word "complete".

Other definitions have been proposed, among which a recent definition that correlates health and personal satisfaction.