Definition
Ghrelin is an appetite-stimulating hormone produced in the stomach and pancreas that influences hunger levels.
Explanation
- Ghrelin communicates hunger signals to the brain, increasing before meals and decreasing after eating.
- It promotes fat storage and weight gain if calorie intake chronically exceeds expenditure.
- Fasting and dieting boosts ghrelin, making weight loss harder. Managing ghrelin is key to maintaining energy balance.
- Getting adequate sleep, protein, and fiber helps control ghrelin hunger signals. Stabilizing blood sugar also suppresses ghrelin.
Examples
- That hungry feeling when it’s close to lunchtime as ghrelin rises.
- Nighttime hunger and cravings as ghrelin peaks before bed.
Related Terms
- Hunger hormone, orexigenic hormone, appetite regulation
Common Questions
- How can I lower ghrelin? Eat sufficient calories and protein, get 7-9 hours of sleep, and manage stress.
- Will exercise lower my ghrelin levels? Yes, high intensity exercise helps control appetite by reducing ghrelin.
Do Not Confuse With
- Leptin – The satiety hormone that decreases appetite.
- Adiponectin – A hormone that regulates glucose and fat metabolism.
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