Ghrelin

Definition

Ghrelin is a hormone produced in the stomach that stimulates appetite and promotes food intake.

Scientific / Technical Definition

Ghrelin is a peptide hormone predominantly secreted by the stomach, which plays a vital role in regulating energy balance by stimulating hunger through interactions with the central nervous system, particularly the hypothalamus. It also influences the release of growth hormone from the pituitary gland.

Benefits

• Regulates appetite and helps manage food intake.
• Influences energy balance and body weight.
• Plays a role in stimulating the release of growth hormone, which is important for muscle development and metabolism.

Examples

• Ghrelin levels increase when the stomach is empty, signalling hunger before meals.
• Ghrelin is highest right before eating and decreases after eating.

Additional Information

• Effects: Ghrelin increases food intake, promotes fat storage, and can affect metabolic processes. It may contribute to obesity if not properly regulated.

Related Terms

• Leptin
• Insulin
• Appetite
• Metabolism

References

• Ghrelin - Understanding its Role in Obesity and Appetite
• The Role of Ghrelin in the Regulation of Appetite and Metabolism