Sham feeding is any procedure that mimics normal food consumption but where food and drink are not actually digested or absorbed. It is generally used in experiments studying hunger, eating or digestion, and is a predominant method used in studying
binge eating disorder
Binge eating disorder (BED) is an eating disorder characterized by frequent and recurrent binge eating episodes with associated negative psychological and social problems, but without the compensatory behaviors common to bulimia nervosa, OSFE ...
. In
animal research
Animal testing, also known as animal experimentation, animal research, and ''in vivo'' testing, is the use of non-human animals in experiments that seek to control the variables that affect the behavior or biological system under study. This ...
it often involves inserting a tube into either the
oesophagus
The esophagus (American English) or oesophagus (British English; both ), non-technically known also as the food pipe or gullet, is an organ in vertebrates through which food passes, aided by peristaltic contractions, from the pharynx to the ...
or stomach, that leaks out anything that has been swallowed.
Animals who are sham fed in this manner eat and swallow almost continually without becoming satiated.
[ ]Chewing gum
Chewing gum is a soft, cohesive substance designed to be chewed without being swallowed. Modern chewing gum is composed of gum base, sweeteners, softeners/plasticizers, flavors, colors, and, typically, a hard or powdered polyol coating. Its te ...
can also be considered sham feeding,[ as whilst very-little or no nutrients are being absorbed into the body, the process of chewing still stimulates digestive system nerves which trigger the release of gastrointestinal hormones, and also increase the production of both saliva and pancreatic secretions.]
References
Food science
{{food-stub