noun. a gastrointestinal hormone produced by epithelial cells lining the fundus of the stomach; appears to be a stimulant for appetite and feeding, but is also a strong stimulant of growth hormone secretion from the anterior pituitary.
- GI hormones
Example sentences of the word ghrelin
1. Noun, singular or mass
Lack of sleep causes your body to make more ghrelin and shuts off the production of leptin.
2. Verb, past participle
If ghrelin is high and leptin is low, you'll feel hungry all the time.
Certain types of workouts may actually cause more peptide YY to be secreted while simultaneously leading to more ghrelin being absorbed.