Search results
Results from the WOW.Com Content Network
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]
Signals arising from the long-term nutrient reservoir of the body may alter the sensitivity of the brain to hunger signals or short-term satiety signals. [19] A peptide, leptin, has profound effects on metabolism and eating. It is secreted by adipose tissue and it increases metabolic rate while decreasing food intake.
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 ...
Knocking out vagal nerve receptors has been shown to cause hyperphagia. [4] Changes in hormones associated with the female menstrual cycle can lead to extreme hunger right before the period. Spikes in estrogen and progesterone and decreased serotonin can lead to cravings for carbohydrates and fats. [5] Polyphagia is found in the following ...
An acquired characteristic is a non-heritable change in a function or structure of a living organism caused after birth by disease, injury, accident, deliberate modification, variation, repeated use, disuse, misuse, or other environmental influence. Acquired traits are synonymous with acquired characteristics.
Starvation response in animals (including humans) is a set of adaptive biochemical and physiological changes, triggered by lack of food or extreme weight loss, in which the body seeks to conserve energy by reducing metabolic rate and/or non-resting energy expenditure to prolong survival and preserve body fat and lean mass.
The term binge eating is defined as eating an unhealthy amount of food while feeling that one's sense of control has been lost. [6] Food addiction initially presents in the form of cravings, which cause a feeling that one cannot cope without the food in question. [7]
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.