This article is republished from The Conversation under a Creative Commons license. Read the original article.

Global food prices shot up nearly 33 percent in September compared with the same period the year before. That’s according to the UN Food and Agriculture Organization (FAO)‘s monthly Food Price Index, which also found that global prices have risen by more than three percent since July, reaching levels not seen since 2011.

The Food Price Index is designed to capture the combined outcome of changes in a range of food commodities, including vegetable oils, cereals, meat and sugar, and compare them month to month. It converts actual prices to an index, relative to average price levels between 2002 and 2004. This is the standard source for tracking food prices—nominal prices, as they’re known, which means they’re not adjusted for inflation.

While nominal prices tell us the monetary cost of buying food in the market, prices adjusted for inflation (what economists call “real” prices) are much more relevant to food security—how easily people can access appropriate nutrition. The prices of all goods and services tend to rise faster than average incomes (though not always). Inflation means that not only do buyers need to pay more per unit for food (due to its nominal price increase), but they have proportionately less money to spend on it, given the parallel price increases of everything else, except their wages and other incomes.

Back in August, I analyzed the FAO’s inflation-adjusted Food Price Index and found that real global food prices were actually higher than in 2011, when food riots contributed to the overthrow of governments in Libya and Egypt.

Courtesy of Alastair Smith/FAO data.

Based on real prices, it is currently harder to buy food on the international market than in almost every other year since UN record keeping began in 1961. The only exceptions are 1974 and 1975. Those food price peaks occurred following the oil price spike of 1973, which drove rapid inflation in many parts of the global economy, including the production and distribution of food.

So what’s now pushing food prices to historic levels?

Fuel prices, bad weather and COVID-19

The drivers of average international food prices are always complicated. The prices of different commodities rise and fall based on universal factors, as well as those specific to each commodity and region.

For example, the oil price rise which started in April 2020 has affected the prices of all food commodities on the FAO index, by increasing the costs of producing and transporting food. Labor shortages resulting from the COVID-19 pandemic have reduced the availability of workers to grow, harvest, process and distribute food, another universal cause of commodity price rises.

The real average price of food has actually been increasing since the year 2000, reversing the previous trend of a steady decline from the start of the 1960s. Despite global efforts—that have, in part, responded to targets set by both the UN Millennium Development and the subsequent Sustainable Development Goals to reduce hunger—prices have made food steadily less accessible.

No single commodity has been continually responsible for the average real price increase from 2000. But the price index of edible oil crops has grown significantly since March 2020, driven mainly by the price of vegetable oils shooting up by 16.9 percent between 2019 and 2020. According to FAO crop reports, this was due to the growing demand for biodiesel and unsupportive weather patterns.

Courtesy of Alastair Smith/FAO data.

The other food category adding most to the overall food price rise is sugar. Here, again, unfavorable weather, including frost damage in Brazil, has reduced supply and inflated prices.

Cereals have added less to overall price increases, but their accessibility worldwide is particularly important for food security. Wheat, barley, maize, sorghum and rice account for at least 50 percent of global nutrition, and as much as 80 percent in the poorest countries. Global buffer stocks of these crops have been shrinking since 2017, as demand has outstripped supply. Running down stores has helped stabilize global markets, but prices have increased sharply from 2019.

Again, the reasons for individual fluctuations are complicated. But something that deserves attention is the number of times since the year 2000 “unpredictable” and “unfavorable weather” has been reported by the FAO to have caused “reduced harvest expectations”, “weather-stricken harvests” and “production decrease.”

Some might worry about the price of pasta as Canadian droughts slash wheat harvests. But, as the real price index for cereals creeps towards levels that escalated riots over the price of bread into general uprisings in 2011, there is an urgent need to consider how communities in less affluent regions can weather these stresses and avoid unrest.

Our technological capacity and socioeconomic organization cannot successfully manage unpredictable and unfavorable weather. Now would be a good time to imagine food supply in a world warmer by more than 2 degrees Celsius—an outcome now considered increasingly likely according to the most recent Intergovernmental Panel on Climate Change report.

Without radical changes, climate breakdown will continue to reduce international access to imported food, well beyond any historical precedent. Higher prices will reduce food security, and if there is one solid law of social science, it’s that hungry people take radical steps to secure their livelihoods—especially where leaders are perceived to have failed.

Alastair Smith is a senior teaching fellow in Global Sustainable Development at the University of Warwic. He does not work for, consult, own shares in or receive funding from any company or organization that would benefit from this article, and has disclosed no relevant affiliations beyond his academic appointment.

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