is defined as a prolonged state of undernourishment. Unlike temporary hunger caused by a missed meal, chronic hunger occurs when a person consistently does not have access to enough food to meet their daily dietary energy requirements over an extended period.
| Feature | | Acute Hunger | | :--- | :--- | :--- | | Timescale | Long-term, persistent. | Short-term, severe, sudden onset. | | Cause | Deep-seated poverty, lack of resources, poor infrastructure. | Natural disasters, war, sudden economic collapse. | | Appearance | Stunting (low height for age), underweight, lethargy. | Wasting (rapid weight loss), severe malnutrition, visible skeletal appearance. | | Analogy | "The slow drip." | "The sudden crash." | chronic hunger definition
The definition of is best understood as a structural failure . It is not a sudden emergency, but a persistent reality where individuals are unable to secure adequate food day after day, leading to long-term physical and cognitive damage. It is the most common form of hunger globally, affecting hundreds of millions of people who are trapped in a cycle of poverty and food insecurity. is defined as a prolonged state of undernourishment
| Feature | Chronic Hunger | Acute Hunger | | :--- | :--- | :--- | | | Long-term (years, decades) | Short-term (weeks, months) | | Cause | Persistent poverty, lack of access to food, structural inequality | Sudden shocks (war, drought, flood, economic crash) | | Biological effect | Stunting (low height-for-age), wasting (low weight-for-height in chronic form), micronutrient deficiencies | Severe wasting, nutritional edema, high mortality risk | | Measurement | Prevalence of undernourishment (PoU), Food Insecurity Experience Scale (FIES) | Integrated Food Security Phase Classification (IPC) Phases 3-5 (Crisis, Emergency, Famine) | | Reversibility | Requires long-term development interventions (agriculture, social protection) | Requires immediate humanitarian aid (food, water, medical care) | | Short-term, severe, sudden onset