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In page Sustainable food system:

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In medium/high income countries, retailers discard an excess of food waste that is viable for human consumption.[5] For example, in the EU an estimated 4 million tons of food is wasted anuually by the Retail/Wholesale sector, which is equivalent to 8kg per capita.[5] Unreasonably high food standards contribute to this waste.[6] For example, it is estimated that half of the edible supply of Zimbabwean mango is thrown out due to failure of aromatic and visual standards.[citation needed]