Does the provision of free medically tailored groceries high in fibre or healthy fats impact sodium and potassium intakes? Secondary data analysis of a randomised controlled trial with extended follow-up.

Zichun Hao, Meredith Peddie, Natalie Ashton, Lucy Anderson, Nan Xin Wang, Andrew Reynolds

Abstract readRandomized Controlled Trial

In one paragraph

Trial report in European journal of nutrition, 2025. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Not yet cited in PubMed.

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5 · Who and what money

Authors and funding

6 authors.

Zichun HaoDepartment of Medicine, University of Otago, PO Box 56, Dunedin, Aotearoa, 9016, New Zealand.

Meredith PeddieDepartment of Human Nutrition, University of Otago, Dunedin, Aotearoa, New Zealand.

Natalie AshtonDepartment of Medicine, University of Otago, PO Box 56, Dunedin, Aotearoa, 9016, New Zealand.

Lucy AndersonDepartment of Medicine, University of Otago, PO Box 56, Dunedin, Aotearoa, 9016, New Zealand.

Nan Xin WangDepartment of Medicine, University of Otago, PO Box 56, Dunedin, Aotearoa, 9016, New Zealand.

Andrew ReynoldsDepartment of Medicine, University of Otago, PO Box 56, Dunedin, Aotearoa, 9016, New Zealand. andrew.reynolds@otago.ac.nz.ORCID http://orcid.org/0000-0001-8952-3892

Funding

Health Research Council of New Zealand 20/591Health Research Council of New Zealand 22/599/ARiddet Institute 3.3Riddet Institute Tranche 2: 3.1Riddet Institute Tranche 3: 1.6University of Otago UORG 0121 0322

6 · The paper itself

Abstract

purposeWe considered the secondary effects of medically tailored groceries high in fibre or healthy fats on sodium and potassium intakes.

methodsThis is a secondary analysis of a trial that evaluated free medically tailored grocery provision on the cardiometabolic risk profile of adults recovering from an acute coronary event. Participants were randomly allocated to one of three groups for 12 weeks: usual care, usual care and groceries high in healthy fats, or usual care and high dietary fibre groceries. Sodium and potassium intakes were assessed using food diaries at baseline, at the end of the 12-week intervention, and at 3 months and 12 months follow-up.

resultsData from all 309 participants were analysed (Usual care: 101; Healthy fats: 105; High fibre: 103). High fibre participants increased potassium intake (+ 279 mg (95%CI 0 to 558 mg)) when compared with Usual care during the intervention period, but this was not maintained during follow-up. There was a decrease in sodium intake for High fibre participants than Usual care at three (- 257 mg (95%CI - 512 to - 1 mg)) and twelve (- 357 mg (95%CI -644 to -71 mg)) months. Healthy fats participants also decreased sodium intakes compared with Usual care, but only at 12 months follow-up (- 342 mg (95%CI - 625 to - 57 mg)).

conclusionsProviding 12 weeks groceries high in unsaturated fats or dietary fibre to adults recovering from an acute coronary event reduced sodium intakes in trial follow up when compared with no grocery provision. An increase in potassium was observed only during the intervention for participants receiving high fibre foods.

Indexed as

Dietary FatsDietary FiberPotassium, DietarySodium, DietaryAdultAgedDiet RecordsFemaleFollow-Up StudiesHumansMaleMiddle AgedSecondary Data AnalysisDietary FatsDietary FiberPotassium, DietarySodium, DietaryDietary fibreFood diaryFood recordPotassiumSodium

Identifiers

PMID41351703

DOI10.1007/s00394-025-03852-1

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Read under generation 80e0d062 · epoch 390. Bibliography from PubMed, PubMed Central and OpenAlex; grants from NIH RePORTER; trial links from ClinicalTrials.gov; estimates, votes and beliefs from the OpenQuestion graph.