Food security is built on three pillars:
- Food availability: sufficient quantities of food available on a consistent basis.
- Food access: having sufficient resources to obtain appropriate foods for a nutritious diet.
- Food use: appropriate use based on knowledge of basic nutrition and care, as well as adequate water and sanitation.
Food security is a complex sustainable development issue, linked to health through malnutrition, but also to sustainable economic development, environment, and trade. There is a great deal of debate around food security with some arguing that:
- There is enough food in the world to feed everyone adequately; the problem is distribution.
- Future food needs can – or cannot – be met by current levels of production.
- National food security is paramount – or no longer necessary because of global trade.
- Globalization may – or may not – lead to the persistence of food insecurity and poverty in rural communities.