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Using food composition tables to estimate decreases in sodium intake due to the reformulation of packaged and ultra-processed foods in a young population in South Africa
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Using food composition tables to estimate decreases in sodium intake due to the reformulation of packaged and ultra-processed foods in a young population in South Africa
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Journal Article
Using food composition tables to estimate decreases in sodium intake due to the reformulation of packaged and ultra-processed foods in a young population in South Africa
2024
Overview
In response to increasing hypertension rates, South Africa implemented a regulation which set a maximum total Na content for certain packaged food categories. We assess changes in reported Na intake among 18-39 years old adults living in one township in the Western Cape as a result of the implementation of the regulation in 2016.
By linking one set of 24-h dietary recall data to two versions of the South Africa Food Composition Database which reflect the pre-regulation and post-regulation periods, we calculated changes in Na intake due to reformulation of food products, not behaviour change. We statistically tested differences in mean consumption in this sample with paired
tests.
Langa, Western Cape, South Africa.
Surveyed participants were residents of Langa between 18 and 39 years old (
2148).
Before and after the implementation of the regulation, there was a statistically significant decrease in the estimated Na intake among adults of 189·4 mg (137·5, 241·4;
= 0·00). Reported Na from cured meat (such as Russians) and certain types of soup powder, cereals and salted peanuts had a 9 to 33 per cent lower calculated Na consumption.
Our conclusions show that independent of any behavioural changes on the part of consumers, it is possible to lower Na intake by using regulations to induce food manufacturers to lower the Na levels in their products. As countries explore similar regulatory strategies, this work can add to that body of evidence to inform policies to improve the food system.
