🎓 All Courses | 📚 Introduction to Nutrition Science Syllabus
Stickipedia University
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Hunger is not simply willpower — it is regulated by powerful hormones that control appetite, satiety, and fat storage. Understanding these hormones is essential for weight management.

Ghrelin — the hunger hormone:

  • Produced primarily in the stomach
  • Rises before meals, falls after eating
  • Signals the brain to increase appetite and food-seeking behavior
  • Rises dramatically during caloric restriction and sleep deprivation

Leptin — the satiety hormone:

  • Produced by fat cells
  • Signals the brain that energy stores are sufficient — reduce appetite, increase energy expenditure
  • Obese individuals often have leptin resistance — high leptin but brain doesn't respond

Why dieting is hard: During sustained caloric restriction, ghrelin rises and leptin falls — the body fights weight loss. This is why slow, sustainable deficits outperform crash diets.


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Introduction to Nutrition Science: Hunger Hormones — Ghrelin and Leptin
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Introduction to Nutrition Science: Hunger Hormones — Ghrelin and Leptin
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Reference:

Wikipedia: Ghrelin

image for linkhttps://en.wikipedia.org/wiki/Ghrelin

📚 Introduction to Nutrition Science — Full Course Syllabus
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