Hormone Spotlight: Cholecystokinin


To continue with our Hormone Spotlight segment, we’re going to have a look into Cholecystokinin. Hormones are the building blocks that ensure our body stays in a homeostatic state. Over the course of the month we’re going to have a look at 4 different hormones that affect hunger, appetite and satiety.


This hormone is produced mainly by I-cells in the duodenum. Cholecystokinin plays a role of improving digestion and increasing the sensation of fullness in the short term, directly after a meal. It has been shown that this hormone helps to slow down the emptying of the stomach during the process of digestion. This in turn will give the sensation of being fuller for longer and not driving the behaviour to find food. Cholecystokinin also stimulates the production of bile from the liver and initiates its release from the gall bladder. Stomach bile aids the digestion and absorption of fats that we eat, helping the uptake of fat-soluble vitamins A, D, E and K.

Interested in finding more about hormones that affect your hunger feelings? You can learn more about these when you enrol onto one of our level 3 standard fitness or therapy courses! You can find the links below:
Level 3 Certificate in Personal Training
Level 3 Certificate in Sports Massage Therapy

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