Summary
This study analyses temporal trends in the mineral and trace element contents of commonly consumed cereals, fruits and vegetables in Finland, drawing on successive editions of the Finnish food composition database. The authors investigate whether concentrations of nutritionally significant minerals and trace elements have declined, increased or remained stable over time, with implications for dietary intake assessments and public health nutrition. The findings contribute to a broader international literature examining whether intensification of agricultural production has been associated with changes in the nutritional quality of plant foods.
UK applicability
Whilst conducted in Finland, the study's findings are broadly relevant to the UK, which shares similar concerns about potential nutrient dilution in intensively produced crops and relies on comparable food composition database methodology; the results may inform UK discussions on dietary reference values and food quality monitoring.
Key measures
Mineral and trace element concentrations (mg/kg fresh weight or dry weight) including calcium, phosphorus, magnesium, iron, zinc, copper, manganese, selenium; temporal comparison across food composition database revisions
Outcomes reported
The study compared mineral and trace element concentrations in cereals, fruits and vegetables across different time periods using Finnish food composition data, examining whether nutrient levels have changed over decades. It assessed changes in elements such as calcium, iron, zinc, selenium and other minerals across multiple food categories.
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