Food Systems, Sustainability, and Food Security
Core concepts
Understand the food supply chain from production through processing, distribution, retail, consumption, and waste. Distinguish food security (consistent access to sufficient, safe, nutritious food) from food safety and food sovereignty. Know the USDA household food security categories: high, marginal, low, and very low food security; hunger is a related but distinct concept. Recognize social determinants (income, transportation, housing, geography) and the difference between emergency food assistance and federal programs (SNAP, WIC, school meals).
Sustainability concepts include environmental footprint, food loss versus food waste, and the trade-offs among nutrition, cost, and environmental impact. Avoid framing sustainability as a single "best diet"; evidence supports patterns rather than single foods.
Traps in questions
- Equating food insecurity with hunger.
- Assuming SNAP and WIC serve identical populations (WIC targets pregnant/postpartum persons, infants, and young children).
- Treating food waste and food loss as synonyms (loss occurs before retail; waste at retail/consumer level).
- Assuming a food is "sustainable" based on one metric alone.
Rule of thumb
When a scenario describes a family skipping meals or running out of food, screen for food insecurity and connect to appropriate programs rather than assuming a knowledge deficit.
Worked example
A family reports running out of food before month's end: the priority is screening and referral (e.g., SNAP, WIC if eligible, food pantry), not simply nutrition education.