Increasing food security requires action across multiple fronts: growing more food, reducing what’s lost after harvest, making food affordable, and building systems that hold up under climate stress. Around 733 million people faced hunger in 2023, roughly one in eleven people globally, and that number has barely budged for three consecutive years. The challenge isn’t just producing enough calories. It’s ensuring people can consistently access, afford, and benefit from nutritious food.
Food security rests on four pillars: availability (is enough food produced?), access (can people afford it?), utilization (does it actually nourish?), and stability (do those first three hold up over time?). Meaningful progress means addressing all four.
Boosting Crop Yields With Precision Farming
One of the most direct ways to increase food availability is producing more from the same land. Precision agriculture technologies, including GPS-guided equipment, drone monitoring, satellite imagery, and soil sensors, let farmers make decisions field by field rather than guessing across an entire farm. Seeds go into the ground at optimal depth and spacing. Fertilizer and water reach only the areas that need them. The result is less waste and more output.
The numbers are substantial. Farms using precision tools like real-time crop monitoring through drones and sensors see yield improvements of 10 to 25 percent, with input costs dropping by around 15 percent. Operations that optimize planting and harvesting through GPS guidance and data analysis report yield increases of 15 to 30 percent and fuel savings of 10 to 20 percent. For smallholder farmers in developing regions, even partial adoption of these tools, such as a single GPS-equipped planter or basic soil sensors, can shift a farm from subsistence to surplus production.
Cutting Post-Harvest Losses
Growing more food only matters if it reaches people. In many developing countries, a significant share of grain is lost between the field and the table due to poor harvesting, inadequate drying, and insect damage during storage. Addressing these losses is one of the fastest, most cost-effective ways to increase food supply without planting a single extra acre.
At the harvesting stage, mechanized options like combine harvesters, maize shellers, and rice-wheat threshers dramatically outperform traditional methods such as beating and trampling grain by hand. These machines reduce grain left in the field and speed up the process so crops are collected before weather damage sets in.
Drying is equally critical. Grain stored at high moisture levels develops mold and attracts insects. Power-driven and solar-assisted dryers give farmers better control over temperature and airflow than sun-drying on open ground, and solar models are affordable enough for small and medium operations.
Storage is where the biggest wins often happen. Hermetic (airtight) storage systems, including specially designed plastic bags like Purdue Improved Crop Storage (PICS) bags, reduce post-harvest losses to less than 1 percent. The principle is simple: sealed containers let the grain’s own respiration use up oxygen and build up carbon dioxide, suffocating insects and suppressing mold without any chemicals. Metal silos developed by the FAO have become widely adopted in countries like Kenya and Mozambique, nearly eliminating insect-related losses. In Argentina, membrane-based grain harvest bags called “Cocoons” use the same airtight approach for large-scale operations and long-distance shipping.
Making Food Affordable Through Social Protection
Food can be abundant in a country and still out of reach for families without the income to buy it. About 2.33 billion people worldwide faced moderate or severe food insecurity in 2023, a number that spiked during the COVID-19 pandemic and hasn’t meaningfully declined since. For many of these people, the problem isn’t supply. It’s price.
Government cash transfer programs are one of the most studied tools for closing this gap. Research consistently shows that households use cash transfers to acquire food as a priority. In studies of adolescents in sub-Saharan Africa, household receipt of a government cash transfer roughly doubled the odds of positive health outcomes, and when cash transfers were combined with food security, the probability of consistent medication adherence rose from 36 to 60 percent. These programs don’t just prevent hunger in the short term. They stabilize families enough to invest in education, health, and small business activity that reduces poverty over time.
The U.S. government’s Feed the Future initiative, for example, targets 20 percent reductions in both poverty and childhood stunting over five years in the regions where it operates. Programs like this pair direct food assistance with longer-term investments in local agricultural markets, aiming to make communities self-sustaining rather than permanently dependent on aid.
Improving Nutrition Through Biofortified Crops
Access to food doesn’t guarantee good nutrition. Staple crops like rice and millet fill stomachs but can leave people deficient in essential vitamins and minerals. Biofortification, the process of breeding or engineering crops to contain higher levels of key nutrients, tackles this problem at the source.
Golden rice, engineered to produce pro-vitamin A, delivers 1.6 to 3.7 micrograms per gram of the vitamin in its dry weight. In regions where vitamin A deficiency causes blindness and weakened immunity in children, replacing conventional rice varieties with golden rice can make a measurable difference without changing anyone’s diet or cooking habits. Iron-biofortified pearl millet has shown similar promise in India, where a six-month trial found that school-age adolescents who ate it regularly showed improved cognitive performance compared to those eating conventional millet.
The advantage of biofortification over supplements or fortified processed foods is scale. Once a biofortified seed variety is developed and distributed, farmers grow it like any other crop. No new supply chain, no recurring cost for vitamin tablets, no need for refrigeration or packaging.
Building Climate Resilience
The stability pillar of food security is under direct threat from climate change. Droughts, floods, and heat waves destroy harvests and disrupt food distribution. Climate-smart agriculture practices help farms maintain productivity even as weather patterns shift.
Cover cropping, where farmers plant secondary crops between growing seasons, protects soil from erosion, improves water retention, and adds organic matter that feeds the next planting. Conservation tillage (minimal or no plowing) preserves soil structure and reduces the fuel and labor costs of preparing fields. Neither of these is a new invention. What makes them “climate-smart” is adopting them deliberately to buffer against environmental volatility while also reducing greenhouse gas emissions from farming operations.
These practices often reinforce each other. A farm using cover crops and reduced tillage together builds healthier soil year over year, which means better yields during normal seasons and smaller losses during dry ones. For regions that depend on rain-fed agriculture, that compounding resilience can mean the difference between a bad year and a catastrophic one.
Growing Food in Cities
Urban agriculture is an increasingly practical piece of the food security puzzle, especially in cities where low-income neighborhoods sit far from grocery stores. Community gardens, rooftop farms, and vertical farming operations bring fresh produce closer to the people who need it most.
Vertical farms, which grow crops in stacked indoor layers under controlled light, can produce impressive yields per square meter. For lettuce and similar greens, vertical farms yield about 7.1 kilograms per square meter per growing cycle, roughly 2.4 times what horizontal farming produces. Cucumbers show even more dramatic differences: 17 kilograms per square meter in urban settings versus 3.8 in conventional fields. These systems work year-round regardless of weather and use a fraction of the water that field agriculture requires.
At the community level, urban farms anchored by community land trusts have proven especially effective in older industrial cities that have lost population and investment. These projects do more than grow food. They remediate vacant land, create job training opportunities, and strengthen neighborhood cohesion. As one developer in a community land trust program put it, residents “are not just getting a house, they are getting a community, and it’s based on fresh, locally grown food.” The combination of affordable housing and local food production addresses both the economic access and physical availability barriers that define food insecurity in urban areas.
Connecting the Strategies
No single intervention solves food insecurity on its own. Precision farming and post-harvest technology increase supply. Cash transfers and fair pricing ensure people can buy what’s available. Biofortified crops improve the nutritional quality of staple foods. Climate-smart practices keep the whole system functioning as environmental conditions shift. And urban agriculture fills gaps in communities that traditional supply chains overlook.
The most effective national strategies layer these approaches together, targeting each of the four pillars simultaneously. Countries that invest in both agricultural productivity and social protection see faster reductions in hunger and stunting than those that focus on production alone. The 152 million additional people pushed into hunger since 2019 are a reminder that progress isn’t automatic, and that food security depends as much on political will and smart policy design as it does on technology.