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Glycaemic Response to a Nut-Enriched Diet in Asian Chinese Adults with Normal or High Glycaemia: The Tū Ora RCT

Lookup NU author(s): Dr Kieren Hollingsworth

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This work is licensed under a Creative Commons Attribution 4.0 International License (CC BY 4.0).


Abstract

© 2024 by the authors. Nut-based products are a good source of high-quality plant protein in addition to mono- and polyunsaturated fatty acids, and may aid low-glycaemic dietary strategies important for the prevention of type 2 diabetes (T2D). In particular, they may be advantageous in populations susceptible to dysglycaemia, such as Asian Chinese. The present study aimed to compare effects of a higher-protein nut bar (HP-NB, also higher in total fibre and unsaturated fats, comprising mixed almonds and peanuts) vs. an isoenergetic higher-carbohydrate cereal bar (HC-CB) within the diet of 101 Chinese adults with overweight and normo- or hyperglycaemia. Ectopic pancreas and liver fat were characterised using magnetic resonance imaging and spectroscopy (MRI/S) as a secondary outcome. Participants were randomized to receive HP-NB or HC-CB daily as a 1 MJ light meal or snack replacement, in addition to healthy eating advice. Anthropometry and clinical indicators of T2D risk were assessed fasted and during an oral glucose tolerance test (OGTT), pre- and post-intervention. No significant difference was observed between diet groups for body weight, body mass index, waist or hip circumference, blood pressure, glucoregulatory markers, lipid profile or inflammatory markers over 12 weeks (all, p > 0.05). No difference was observed between glycaemic subgroups or those with normal versus high ectopic organ fat. Although HP-NB can attenuate postprandial glycaemia following a meal, no effects were observed for either fasting or glucose-mediated outcomes following longer-term inclusion in the habitual diet of Chinese adults with overweight, including at-risk subgroups.


Publication metadata

Author(s): Sequeira-Bisson IR, Lu LW, Silvestre MP, Plank LD, Middleditch N, Acevedo-Fani A, Parry-Strong A, Hollingsworth KG, Tups A, Miles-Chan JL, Krebs JD, Foster M, Poppitt SD

Publication type: Article

Publication status: Published

Journal: Nutrients

Year: 2024

Volume: 16

Issue: 13

Online publication date: 01/07/2024

Acceptance date: 28/06/2024

Date deposited: 24/07/2024

ISSN (electronic): 2072-6643

Publisher: MDPI

URL: https://doi.org/10.3390/nu16132103

DOI: 10.3390/nu16132103

PubMed id: 38999851


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Funding

Funder referenceFunder name
New Zealand National Science Challenge High-Value-Nutrition (HVN) program, Ministry for Business, Innovation and Employment (MBIE, Grant No. 3710040)

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