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List of countries by population (United Nations) This is a list of countries and other inhabited territories of the world by total population, based on estimates published by the United Nations in the 2024 revision of World Population Prospects. It presents population estimates from 1950 to the present. [ 2]
Intentional weight loss is the loss of total body mass as a result of efforts to improve fitness and health, or to change appearance through slimming. Weight loss is the main treatment for obesity, [1] [2] [3] and there is substantial evidence this can prevent progression from prediabetes to type 2 diabetes with a 7–10% weight loss and manage cardiometabolic health for diabetic people with a ...
The sleeping position is the body configuration assumed by a person during or prior to sleeping. Six basic sleeping positions have been identified: [dubious – discuss] Fetus (41%) – curling up in a fetal position. This was the most common position, and is especially popular with women. Log (15%) – lying on one's side with the arms down ...
Human brain. The brain is the central organ of the human nervous system, and with the spinal cord makes up the central nervous system. The brain consists of the cerebrum, the brainstem and the cerebellum. It controls most of the activities of the body, processing, integrating, and coordinating the information it receives from the sense organs ...
Blood is composed of blood cells suspended in blood plasma. Plasma, which constitutes 55% of blood fluid, is mostly water (92% by volume), [ 2] and contains proteins, glucose, mineral ions, and hormones. The blood cells are mainly red blood cells (erythrocytes), white blood cells (leukocytes), and (in mammals) platelets (thrombocytes). [ 3]
ISO 639 is a standardized nomenclature used to classify languages. [ 1] Each language is assigned a two-letter (set 1) and three-letter lowercase abbreviation (sets 2–5). [ 2] Part 1 of the standard, ISO 639-1 defines the two-letter codes, and Part 3 (2007), ISO 639-3, defines the three-letter codes, aiming to cover all known natural ...
Race is a categorization of humans based on shared physical or social qualities into groups generally viewed as distinct within a given society. [ 1] The term came into common usage during the 16th century, when it was used to refer to groups of various kinds, including those characterized by close kinship relations. [ 2]
MeSH. D006400. MedlinePlus. 003646. The hematocrit ( / hɪˈmætəkrɪt /) ( Ht or HCT ), also known by several other names, is the volume percentage (vol%) of red blood cells (RBCs) in blood, [ 1][ 2] measured as part of a blood test. [ 3] The measurement depends on the number and size of red blood cells. [ 3]