Hunger

Definition

Hunger is the feeling or physical condition signaling the need to eat, often accompanied by fatigue and an empty stomach sensation.

Scientific / Technical Definition

Hunger is a physiological state driven by the body's need for energy and nutrients, usually regulated by complex interactions between hormones, the digestive system, and the central nervous system. This state is often marked by a reduction in blood sugar levels and the secretion of hormones like ghrelin that stimulate the sensation of hunger.

Benefits

• Alerts the body to the need for energy and nutrient intake.
• Promotes meal consumption, necessary for maintaining vital bodily functions.
• Stimulates digestion and prepares metabolic pathways for nutrient absorption.

Examples

• Feeling hungry between meals.
• Desire to eat after physical activity or lengthy periods without food.

Additional Information

• Importance: Hunger plays a crucial role in signaling when the body needs food, ensuring energy needs and nutrient requirements are met, particularly important in seniors to prevent malnutrition and ensure adequate nutrient intake.

Related Terms

• Appetite
• Satiety
• Malnutrition
• Caloric intake

References

• Understanding the Science of Hunger
• The Role of Hunger in Energy Regulation