Food security refers to a state where all people, at all times, have physical, social, and economic access to sufficient, safe, and nutritious food that meets their dietary needs and food preferences for an active and healthy life. This concept involves four key dimensions:

1. Availability: Ensuring an adequate and stable food supply, which involves sufficient production, distribution, and exchange at the global, national, and local levels.
2. Access: Ensuring that individuals and communities have economic and physical access to the food they need. This includes factors such as income, infrastructure, and social resources.
3. Utilization: Ensuring that food is used effectively by the body, which involves safe and nutritious preparation, as well as access to clean water, sanitation, and health care.
4. Stability: Ensuring that the other three dimensions are maintained over time, even in the face of shocks or disruptions such as natural disasters, economic downturns, or conflicts.