Summary
This paper, published in PNAS (vol. 114, issue 51, pp. E10970–E10979), investigates the extent to which soil mineral status influences dietary mineral supplies and human micronutrient adequacy at a population scale. Joy and colleagues likely draw on food balance sheet data, soil geochemistry, and dietary modelling to estimate deficiency risk for minerals including selenium, zinc, and iodine across diverse geographies. The work contributes to understanding of how agronomic and soil-management interventions may help address micronutrient deficiencies in human diets.
UK applicability
Findings have direct relevance to the UK, where selenium and iodine deficiency are recognised public health concerns linked in part to low soil selenium concentrations and changes in food sourcing; the paper may inform agronomic biofortification strategies and dietary guidance in the UK context.
Key measures
Dietary mineral adequacy (estimated average requirement); soil mineral concentrations; population-level nutrient deficiency risk; food supply mineral content
Outcomes reported
The study likely examined the relationship between soil mineral concentrations and the adequacy of dietary mineral supplies in human populations, assessing risk of deficiency for key micronutrients such as selenium, zinc, and iodine. It probably estimated the proportion of populations at risk of inadequate mineral intake as a function of soil and agricultural conditions.
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