The global shift towards healthier diets, increased agricultural efficiency, and significant reductions in food waste has the potential to fundamentally reshape food production and the use of agricultural land by 2050.

Key Modeling Findings

An analysis conducted by an international team of researchers shows that implementing recommendations for improved nutrition and waste reduction could decrease global agricultural land use by 6% compared to current trends. At the same time, the cost of livestock production is expected to drop by 42% (about $630 billion) compared to 2020. The most significant changes are projected in the ruminant sector (cattle, sheep, goats): by 2050, the value of this sector could fall by 70% (to $274 billion), and the number of ruminant animals could decrease by around 400 million head.

Meanwhile, the production of plant-based foods such as vegetables, fruits, nuts, and legumes is expected to grow. The total global value of these crops could increase by 57% (to $890 billion). Legumes (beans, peas, lentils, chickpeas) are important sources of protein and fiber and typically require fewer resources to produce compared to animal products.

Impact on the Environment and Economy

Adopting healthier diets could prevent up to 15 million premature deaths annually. The global food system generates hidden costs of $10–20 trillion each year, including healthcare expenses, environmental damage, and productivity losses that are not reflected in retail prices. Most of these costs are linked to unhealthy diets.

The modeling also indicates the potential for a substantial reduction in net CO2 emissions related to changes in agricultural land use. By 2050, such emissions could be 85% lower than in 2020. Land use changes include deforestation, conversion of pastures, and draining of wetlands for agricultural purposes, all of which release carbon into the atmosphere.

Regional Differences

The economic impacts will vary significantly between countries and regions. In the United States, by 2050, the total value of agricultural production could decrease by 21% ($76 billion), with crop production value rising by 20% ($40 billion) and livestock production falling by 73% ($116 billion). In India, overall agricultural production value is expected to grow by 46% ($198 billion), with crop value increasing by 65% ($208 billion) and livestock production dropping by 8% ($10 billion). In Europe, a 35% decrease in total agricultural production value is projected ($190 billion), with crop value declining by 8% ($22 billion) and livestock by 66% ($168 billion). These differences reflect the unique characteristics of agriculture, current diets, production costs, land availability, trade, and types of products produced in each region.

Social and Practical Aspects

The modeling assumed that the transition to healthier diets would occur voluntarily and without additional costs to consumers, not accounting for possible financial, cultural, or practical barriers. In reality, the availability and affordability of healthy food can vary, and dietary preferences are shaped by local traditions, personal tastes, income, and product accessibility.

Outlook and Challenges

The study emphasizes that the scenarios considered represent only a portion of possible futures. Further research is needed to explore other transformation pathways, including different policy decisions, economic conditions, and consumer behavior models. Without careful planning, the benefits of the transition could be accompanied by serious economic disruptions for communities heavily dependent on livestock and other shrinking sectors.

Timely policy decisions can help protect vulnerable food producers and consumers during the shift towards healthier and more sustainable diets.