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Appetite is the desire to eat food items, usually due to hunger. Appealing foods can stimulate appetite even when hunger is absent, although appetite can be greatly reduced by satiety . [ 1 ] Appetite exists in all higher life-forms, and serves to regulate adequate energy intake to maintain metabolic needs.
Contemporary research has both built upon and revised the findings of the Cannon-Washburn experiment, leading to a more nuanced and comprehensive understanding of hunger and appetite regulation. Modern studies recognize hunger as a complex interplay of multiple factors, far beyond the simple stomach contractions observed in the original experiment.
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 ...
Hunger is the result of a fall in blood glucose level or depriving cells of the ability to metabolize fatty acids—glucoprivation and lipoprivation, respectively, stimulate eating. [13] Detectors in the brain are only sensitive to glucoprivation; detectors in the liver are sensitive to both glucoprivation and lipoprivation outside the blood ...
Sensory specific satiety is a phenomenon that refers to the declining satisfaction generated by the consumption of a certain type of food, and the consequent renewal in appetite resulting from the exposure to a new flavour or food. [1] The energy density and nutrient composition of foods has little effect on sensory-specific satiety.
Undernourishment, or hunger, according to the Food and Agriculture Organization (FAO), is dietary intake below the minimum daily energy requirement. [55] The amount of undernourishment is calculated utilizing the average amount of food available for consumption, the size of the population, the relative disparities in access to the food, and the ...
In the field of hunger relief, the term hunger is used in a sense that goes beyond the common desire for food that all humans experience, also known as an appetite. The most extreme form of hunger, when malnutrition is widespread, and when people have started dying of starvation through lack of access to sufficient, nutritious food, leads to a ...
Hedonic hunger or hedonic hyperphagia is the "drive to eat to obtain pleasure in the absence of an energy deficit". [1] Particular foods may have a high "hedonic rating" [2] or individuals may have increased susceptibility to environmental food cues. [3] Weight loss programs may aim to control or to compensate for hedonic hunger. [4]