Compare and contrast the roles of leptin, ghrelin, and CCK in regulating hunger.
Understand the Problem
The question is asking for a comparative analysis of the hormones leptin, ghrelin, and CCK in their roles related to hunger regulation. It seeks to understand how each hormone functions, their effects on appetite, and any similarities or differences between them.
Answer
Leptin reduces hunger long-term, ghrelin increases hunger short-term, and CCK induces satiety.
Leptin reduces hunger and is involved in long-term energy balance. Ghrelin increases hunger by stimulating appetite in the short term. CCK (cholecystokinin) helps induce satiety after eating. They work together to regulate hunger and food intake.
Answer for screen readers
Leptin reduces hunger and is involved in long-term energy balance. Ghrelin increases hunger by stimulating appetite in the short term. CCK (cholecystokinin) helps induce satiety after eating. They work together to regulate hunger and food intake.
More Information
Leptin is produced by fat cells and signals the brain to reduce appetite, leading to long-term energy balance. Ghrelin, produced in the stomach, signals hunger and stimulates eating, while CCK is released in response to food intake and promotes feelings of fullness.
Tips
A common mistake is to confuse the time scales at which these hormones operate: leptin is for long-term regulation, ghrelin for immediate hunger signaling, and CCK for immediate satiety after meals.
Sources
- The role of leptin and ghrelin in the regulation of food intake and ... - pubmed.ncbi.nlm.nih.gov
- Endocrine controls of eating: CCK, leptin, and ghrelin - PubMed - pubmed.ncbi.nlm.nih.gov
- Ghrelin and Leptin: Hormones, Hunger, Weight Changes - verywellhealth.com
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