Summary
This paper, published in Nutrition and Food Science, analyses historical UK food composition data to assess whether the nutrient content of produce has changed over the twentieth century. Drawing on government food composition tables and earlier analyses, it likely finds evidence of declining mineral concentrations in several food groups, consistent with findings reported by Mayer's earlier widely cited 1997 work. The paper situates these trends within the context of changes in agricultural practice, crop varieties, and soil management.
UK applicability
The study is directly applicable to UK conditions, drawing exclusively on UK food composition data and government nutrient databases. Its findings are relevant to UK dietary policy, food labelling considerations, and debates about the nutritional quality of domestically produced food.
Key measures
Mineral and micronutrient concentrations (e.g. iron, calcium, magnesium, copper, sodium) in fruit and vegetables; percentage change over time across historical datasets
Outcomes reported
The study examines changes in the mineral and nutrient content of UK-grown produce over several decades, drawing on historical food composition data. It reports apparent declines in key micronutrients across a range of fruit and vegetable categories.
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