# Prevalence of Undernourishment
- **The prevalence of undernourishment** is the **percentage of the population** whose usual food consumption is **insufficient to provide the levels of dietary energy required to maintain a normal, active, and healthy life**.
- A data value shown as **2.5%** may indicate a **prevalence of undernourishment of less than 2.5%**.
- The graph displays **undernourishment prevalence rates in Yemen** over two decades, from **2001 to 2021**.
- The rates indicate **severe food insecurity**, with **34.5%** of the population being undernourished in **2021**.