By Kary Vannice

As global supply chains wobble and climate change disrupts food production around the world, we are beginning to see evidence of a system that is far more “at risk” than we once thought, calling into question the sustainability of imported, prepackaged, and profit-driven food systems.

Because of the obvious vulnerability of such a vast and complex food network, more and more countries and communities are starting to talk about the necessity to rely less on outside sources and are asking the question, “How can we provide for the needs of our people, independent of outside resources?”

The Sierra Sur Region

And the answer may be found in the most unassuming of places, and very close to home for many of us, the high mountain region of Oaxaca’s Sierra Sur. Contrary to popular belief, the best way forward may be to go back in time to a food production and distribution concept that’s been around for centuries.

Unlike the more familiar concept of food security, which focuses on access to enough calories to feed a population, food sovereignty speaks to a deeper right. It is the right of people to grow, distribute, and consume food in ways that are culturally appropriate, ecologically sustainable, and locally controlled.

A Resilient Food System

The Sierra Sur’s working model of a decentralized, cooperative, and land-honoring food system challenges modern day industrial norms; it also proves that the practices of working in community, diversifying crops, saving seeds, and using natural fertilizers increase and ensure food security.

Here, agricultural practices are resilient by design. Families cultivate the land using practices passed down for generations. At the center of this model is the traditional milpa, planting corn, beans, and squash together in the same plot. Each plant supports the others: the corn gives the beans something to climb, the beans fix nitrogen in the soil, and the squash shades the earth to retain moisture and suppress weeds. Some plots also include sunflowers to attract pollinators, chili plants to deter pests, and nitrogen-fixing legumes to improve soil structure and support long-term fertility.

This system is efficient, natural, and balanced, unlike the industrial approach to agriculture that relies on vast tracts of monocrops that often require chemical pesticides and herbicides to assure a profitable harvest – chemicals that deplete the land of nutrients and contribute to soil erosion.

This high mountain terrain is notoriously challenging to cultivate, but farmers here still employ the ancient technique developed centuries ago of expertly terracing the land. This allows families to farm steep, rugged hillsides and utilize natural rainwater irrigation systems that require very little modern infrastructure.

And because food is grown close to where it’s eaten, the system isn’t vulnerable to supply chain breakdowns or fuel price hikes. There’s no need to transport goods across long distances, and no middleman taking profits. Small local markets and neighbor-to-neighbor bartering ensure that food moves efficiently within the community. Trade is based on trust and relationships, not price and profit.

Unlike the global supply chain, this local distribution model keeps food accessible, affordable, and in the hands of the community. And if one farmer experiences a surplus, it’s managed through sharing, trade, or local sale. This keeps both waste and overproduction in check.

In contrast to countries like the United States, where government subsidies incentivize farmers to overproduce low-nutrient crops like corn, soy, and wheat — often flooding the market, driving down prices, and sometimes resulting in crops being dumped or left to rot — the food system in the Sierra Sur is built on intention. Waste is minimal because everything grown has a purpose and value within the community.

The Benefits of Food Sovereignty

And while these systems may not scale neatly into industrial agriculture, they do offer a meaningful answer to the food sovereignty question. The shift isn’t necessarily about changing the physical system — it’s about implementing a different value system. One whose guiding principles are diversity over uniformity, local over distant, cooperation over competition, enough over excess, and care over control.

But most importantly, this food model is socially regenerative. It empowers communities to care for their own needs without dependence on multinational corporations, fragile import systems, or debt-based agricultural schemes. It keeps the knowledge, value, and power of food in the hands of the people who grow it. And maybe that’s exactly what the world needs right now: not a new invention, but a return to what has always worked.