Appetite is the desire to eat food, felt as hunger. Appetite exists in all higher life-forms, and serves to regulate adequate energy intake to maintain metabolic needs. It is regulated by a close interplay between the digestive tract, adipose tissue and the brain. Appetite has a relationship with every individual's behavior. Appetitive and consummatory behaviours are the only processes that involve energy intake, whereas all other behaviours affect the release of energy When stressed, appetite levels may increase and result in an increase of food intake. Decreased desire to eat is termed anorexia, while polyphagia (or "hyperphagia") is increased eating. Dysregulation of appetite contributes to anorexia nervosa, bulimia nervosa, cachexia, overeating, and binge eating disorder.
Read more about Appetite: Physiological Factors, Regulation, Role in Disease, Pharmacology
Famous quotes containing the word appetite:
“As some heads cannot carry much wine, so it would seem that I cannot bear so much society as you can. I have an immense appetite for solitude, like an infant for sleep, and if I don’t get enough of it this year, I shall cry all the next.”
—Henry David Thoreau (1817–1862)
“Even in the centuries which appear to us to be the most monstrous and foolish, the immortal appetite for beauty has always found satisfaction.”
—Charles Baudelaire (1821–1867)
“The quality of the will to power is, precisely, growth. Achievement is its cancellation. To be, the will to power must increase with each fulfillment, making the fulfillment only a step to a further one. The vaster the power gained the vaster the appetite for more.”
—Ursula K. Le Guin (b. 1929)