Skip to main content

World wastes half its food, study finds

By Ashley Fantz, CNN
updated 1:41 PM EST, Thu January 10, 2013
Waste food products stocked at the Methavalor factory in Morsbach, France on October 23, 2012.
Waste food products stocked at the Methavalor factory in Morsbach, France on October 23, 2012.
STORY HIGHLIGHTS
  • Globally about 4.4 billion tons of food is produced, engineering group said
  • Consumers in developed countries throw as much as 50 percent away
  • Waste comes at all stages - harvesting, storage, transportation, and purchasing

(CNN) -- Up to half of the world's food is wasted, according to a new report that found production inefficiencies in developing countries and market and consumer waste in more advanced societies.

The British-based independent Institution of Mechanical Engineers said about 4.4 billion tons of food is produced annually and roughly half of it is never eaten.

Some of it is lost to inefficient harvesting, storage and transportation, while the rest is wasted by markets or consumers. The group also said food waste also impacts land, energy and water use.

"This level of wastage is a tragedy that cannot continue if we are to succeed in the challenge of sustainably meeting our future food demands," the group said in its report.

Read the complete study

Starting the study in 2010, engineers began examining populations that were fully developed, such as those in Europe.

They also analyzed food production and consumption practices in countries at various states of development, like China, and newer levels of development, like those in Africa.

While waste occurred globally, broader food production problems seem to be more prevalent in less developed areas.

In sub-Saharan Africa, waste typically occurrs at the farmer-producer end of the supply chain, the study showed. Harvesting, transportation and infrastructure also tend to be poor. And food is also rarely stored properly in these areas.

Read more: How severe weather impacts global food supply

In Southeast Asia, up to 80 percent of the rice harvest is lost, the group noted.

As far as the developed world, Britain has much more efficient farming practices, better transportation, storage and processing facilities. But food is still wasted at the wholesale and retail levels.

Customers end up throwing away as much as half of what they buy, the study said.

Markets also waste food.

"Major supermarkets, in meeting consumer expectations, will often reject entire crops of perfectly edible fruit and vegetables at the farm because they do not meet exacting marketing standards for their physical characteristics, such as size and appearance," the study said.

Because of that, up to 30% of Britain's vegetable crop is never harvested.

Moreover, sales promotions "frequently encourage customers to purchase excessive quantities," which they don't eat, the study said.

ADVERTISEMENT
Part of complete coverage on
updated 10:26 AM EST, Wed February 6, 2013
Advocates say the exam includes unnecessarily invasive and irrelevant procedures -- like a so-called "two finger" test.
updated 7:09 PM EST, Tue February 5, 2013
Supplies of food, clothing and fuel are running short in Damascus and people are going hungry as the civil war drags on.
updated 1:01 PM EST, Wed February 6, 2013
Supporters of Richard III want a reconstruction of his head to bring a human aspect to a leader portrayed as a murderous villain.
updated 10:48 AM EST, Tue February 5, 2013
Robert Fowler spent 130 days held hostage by the same al Qaeda group that was behind the Algeria massacre. He shares his experience.
updated 12:07 AM EST, Wed February 6, 2013
As "We are the World" plays, a video shows what looks like a nuclear attack on the U.S. Jim Clancy reports on a bizarre video from North Korea.
The relationship is, once again, cold enough to make Obama's much-trumpeted "reset" in Russian-U.S. relations seem thoroughly off the rails.
Ten years on, what do you think the Iraq war has changed in you, and in your country? Send us your thoughts and experiences.
updated 7:15 AM EST, Tue February 5, 2013
Musician Daniela Mercury has sold more than 12 million albums worldwide over a career span of nearly 30 years.
Photojournalist Alison Wright travelled the world to capture its many faces in her latest book, "Face to Face: Portraits of the Human Spirit."
updated 7:06 PM EST, Tue February 5, 2013
Europol claims 380 soccer matches, including top level ones, were fixed - as the scandal widens, CNN's Dan Rivers looks at how it's done.
updated 7:37 AM EST, Wed February 6, 2013
That galaxy far, far away is apparently bigger than first thought. The "Star Wars" franchise will get two spinoff movies, Disney announced.
updated 7:27 PM EDT, Fri July 25, 2014
It's an essential part of any trip, an activity we all take part in. Yet almost none of us are any good at it. Souvenir buying is too often an obligatory slog.
ADVERTISEMENT
ADVERTISEMENT
ADVERTISEMENT
ADVERTISEMENT