Effect of Sustainably Sourced Protein Consumption on Nutrient Intake and Gut Health in Older Adults: A Systematic Review

Jones, D., Celis-Morales, C., Gray, S.R., Morrison, D.J., Ozone, S.E., Jain, M., Mattin, L.R. and Burden, S. 2024. Effect of Sustainably Sourced Protein Consumption on Nutrient Intake and Gut Health in Older Adults: A Systematic Review. Nutrients. 16 (9) 1398. https://doi.org/10.3390/nu16091398

TitleEffect of Sustainably Sourced Protein Consumption on Nutrient Intake and Gut Health in Older Adults: A Systematic Review
TypeJournal article
AuthorsJones, D., Celis-Morales, C., Gray, S.R., Morrison, D.J., Ozone, S.E., Jain, M., Mattin, L.R. and Burden, S.
Abstract

Diet is integral to the healthy ageing process and certain diets can mitigate prolonged and deleterious inflammation. This review aims to assess the impact of diets high in sustainably sourced proteins on nutrient intake, gut, and age-related health in older adults. A systematic search of the literature was conducted on 5 September 2023 across multiple databases and sources. Studies assessing sustainably sourced protein consumption in community dwelling older adults (≥65 years) were included. Risk of bias (RoB) was assessed using ‘RoB 2.0′ and ‘ROBINS-E’. Narrative synthesis was performed due to heterogeneity of studies. Twelve studies involving 12,166 older adults were included. Nine studies (n = 10,391) assessed habitual dietary intake and had some RoB concerns, whilst three studies (n = 1812), two with low and one with high RoB, conducted plant-based dietary interventions. Increased adherence to sustainably sourced diets was associated with improved gut microbial factors (n = 4640), healthier food group intake (n = 2142), and increased fibre and vegetable protein intake (n = 1078). Sustainably sourced diets positively impacted on gut microbiota and healthier intake of food groups, although effects on inflammatory outcomes and health status were inconclusive. Future research should focus on dietary interventions combining sustainable proteins and fibre to evaluate gut barrier function and consider inflammatory and body composition outcomes in older adults.

KeywordsHealthy ageing
Gut microbiota
Sustainable Diet
Article number1398
JournalNutrients
Journal citation16 (9)
ISSN2072-6643
Year2024
PublisherMDPI
Publisher's version
License
CC BY 4.0
File Access Level
Open (open metadata and files)
Digital Object Identifier (DOI)https://doi.org/10.3390/nu16091398
PubMed ID38732644
Publication dates
Published06 May 2024
FunderPartly funded and facilitated by the UKRI funded Ageing and Nutrient Sensing Network

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