Planet and energy · 1 min read
Eating better was associated with more food wasted and more irrigation water used to grow it
A U.S. estimate found that producing discarded food required less land but more water and pesticides.
The study, in plain language
No household trash was weighed. Researchers started with what more than 35,000 people reported eating, applied food-waste rates, and combined this with an agricultural model estimating the land, irrigation water, and pesticides needed to produce it. They estimated that about 420 grams of food per person per day was discarded in the United States from 2007 to 2014.
The relationship appeared when waste was compared with diet quality: higher quality was associated with more discarded food. Producing that food required less cropland, but more irrigation water and pesticides. Much of this was related to fruits and vegetables, which use less land and more of those inputs than other crops. The model did not measure pesticide residues in food; it only estimated how much was used to produce it.
The key idea
What is left on the plate carries land, water, and pesticides that were already used before it reached your kitchen.
Something to think about
The next time you throw something from the fridge away, think about what it took to get it there. The water and land behind it are invisible in the bin.
The original study
Relationship between food waste, diet quality, and environmental sustainability
Source under CC0 1.0. English adaptation and explanation by PaperFlow, with AI assistance. The text has been reorganized for a general audience; it is not the complete paper and does not imply endorsement by its authors.
One study alone does not represent a field's consensus. Educational content does not replace professional advice. Report a possible error.