Hunger (physiology)

Hunger is a sensation that motivates the consumption of food. The sensation of hunger typically manifests after only a few hours without eating and is generally considered to be unpleasant. Satiety occurs between 5 and 20 minutes after eating.^[1] There are several theories about how the feeling of hunger arises.^[2] The desire to eat food, or appetite, is another sensation experienced with regard to eating.^[3]

The term hunger is also the most commonly used in social science and policy discussions to describe the condition of people who suffer from a chronic lack of sufficient food and constantly or frequently experience the sensation of hunger, and can lead to malnutrition. A healthy, well-nourished individual can survive for weeks without food intake (see fasting), with claims ranging from three to ten weeks.^[4]

Satiety is the opposite of hunger; it is the sensation of feeling full.^[5]

^ Steen, Juliette (10 November 2016). "We Found Out If It Really Takes 20 Minutes To Feel Full". The Huffington Post. Retrieved 20 April 2017.
^ Taylor, Chase, Holman, Ira Carelton (1918). "Texas Medicine, Volume 13". Texas Medical Association, 1918. 3: 341.{{cite journal}}: CS1 maint: multiple names: authors list (link)
^ Lieberson (MD), Alan. "How long can a person survive without food?". Scientific American. Retrieved 12 November 2012.
^ Ravilious, Kate (27 December 2005). "How long can someone survive without water?". The Guardian. London. Retrieved 12 August 2007. "People can last a few days without water depending on the environment in which they find themselves and whether [they are] injured or not," says Jeremy Powell-Tuck, professor of clinical nutrition at Barts and the London Queen Mary school of medicine, who supervised Blaine's recovery.
^ Oxford University Press. "satiety, n." OED Online. Retrieved 14 March 2017.

[1] Steen, Juliette (10 November 2016). "We Found Out If It Really Takes 20 Minutes To Feel Full". The Huffington Post. Retrieved 20 April 2017.

[2] Taylor, Chase, Holman, Ira Carelton (1918). "Texas Medicine, Volume 13". Texas Medical Association, 1918. 3: 341.{{cite journal}}: CS1 maint: multiple names: authors list (link)

[3] Lieberson (MD), Alan. "How long can a person survive without food?". Scientific American. Retrieved 12 November 2012.

[guardian_water-4] Ravilious, Kate (27 December 2005). "How long can someone survive without water?". The Guardian. London. Retrieved 12 August 2007. "People can last a few days without water depending on the environment in which they find themselves and whether [they are] injured or not," says Jeremy Powell-Tuck, professor of clinical nutrition at Barts and the London Queen Mary school of medicine, who supervised Blaine's recovery.

[5] Oxford University Press. "satiety, n." OED Online. Retrieved 14 March 2017.

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