The Demographic Diet

After Climate Change, Depopulation Will Be the Agri-Food Sector's Greatest Challenge.

How do you grow an agri-food business when there are simply fewer mouths to feed?

It may sound like a distant concern, but it is rapidly becoming one of the defining economic questions facing the global food industry. After climate change, demographic decline could well become the greatest long-term challenge for agriculture, food manufacturing, retail and foodservice.

The latest figures from Quebec’s Institute of Statistics (ISQ) illustrate the point. In 2025, Quebec’s population declined slightly—the first decrease in more than half a century. As of January 1, 2026, the province’s population stood at approximately 9.03 million, down by about 9,600 people. The decline was driven primarily by a reduction in non-permanent residents, including temporary foreign workers, international students and asylum seekers. At the same time, Quebec continues to age, with deaths now outnumbering births. Looking ahead, the ISQ projects that the province’s population will eventually stabilize at roughly 9.2 million, although demographic trajectories will differ considerably from one region to another.

Quebec is hardly an outlier.

Across Canada, years of rapid population growth fueled largely by temporary immigration have given way to much slower growth—and in some provinces, outright population declines. The demographic momentum that has quietly supported food demand for decades is beginning to fade.

The picture becomes even more compelling when viewed globally. According to the latest United Nations projections, nearly 70 countries and territories are expected to experience population decline by the early 2030s. Japan, China, South Korea, Italy and much of Eastern Europe are already grappling with shrinking populations, persistently low birth rates and rapidly aging societies. Meanwhile, future global population growth will be concentrated overwhelmingly in Sub-Saharan Africa, fundamentally reshaping labour markets, consumer demand and food supply chains.

For an industry that has long relied on growing populations to drive sales, adapting to demographic contraction will require an entirely different mindset.

For decades, success was relatively straightforward: more people meant more food purchases, more grocery traffic and more restaurant visits. Volume was king. That equation no longer holds.

In fact, demographic decline is only half the story.

A second structural force is beginning to reshape food demand: the rapid adoption of GLP-1 medications such as Ozempic, Wegovy and Mounjaro. Originally developed to treat diabetes but now widely prescribed for weight management, these medications are changing how millions of people eat. Consumers using GLP-1 therapies typically consume fewer calories, snack less frequently, reduce impulse purchases and increasingly seek foods with higher nutritional value.

This means the agri-food sector faces a double demand challenge. In many advanced economies, there will be fewer consumers, and those consumers will, on average, eat less.

That changes everything.

The industry’s value proposition can no longer be based primarily on selling more calories. Instead, companies will need to create more value per calorie. Future growth will depend less on volume and increasingly on quality, innovation, convenience, personalization and health outcomes.

The opportunities are significant for companies prepared to adapt. Foods offering superior nutritional density, products designed for healthy aging, portion sizes tailored to one- and two-person households, packaging that reduces food waste, functional foods supporting wellness and longevity, and convenient meal solutions all represent areas where value can replace volume.

Consumer demographics themselves will continue to evolve. Households will become smaller. More people will live alone. Populations will grow older. Many urban centres will experience slower growth—or even decline. These demographic realities will influence food demand just as profoundly as climate change is already influencing food production.

The winners in tomorrow’s food economy will not necessarily be those producing the highest volumes. They will be the companies that best understand changing consumer needs and invest accordingly—in research and development, nutrition science, food technologies, automation to address labour shortages, and export strategies targeting regions where population growth remains strong.

Demographic decline does not inevitably lead to economic decline. But it does demand a new business model.

For much of the past century, the agri-food industry has measured success in tonnes produced, units sold and calories consumed. Tomorrow’s leaders will be measured differently. They will succeed by creating more value with fewer consumers and fewer calories sold.

That may prove to be the most profound transformation the food industry has experienced since the industrialization of the modern food system.