Without the hormone cholecystokinin, the body would have trouble:
regulating appetite and digestion.
Cholecystokinin is a hormone released by cells in the small intestine in response to the presence of fats and proteins in the digestive tract. It signals to the brain that the body is full, which helps regulate appetite and prevent overeating. It also stimulates the gallbladder to release bile, which aids in the digestion and absorption of fats.
Without cholecystokinin, individuals may have difficulty feeling full after eating, leading to overeating and potential weight gain. They may also experience issues with digesting fats and proteins, leading to malabsorption and nutrient deficiencies.