ArticleThe journal of nutrition, health & aging2025
A vegan dietary pattern is associated with high prevalence of inadequate protein intake in older adults; a simulation study.
Article in The journal of nutrition, health & aging, 2025. The graph could read no effect estimate from its abstract, so it casts no vote on the map. Cited by 2 papers.
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Who cites it
2 citing papers in PubMed.
- [Protein intake and preservation of function in old age : Current evidence and present research gaps].Zeitschrift fur Gerontologie und Geriatrie · 2026Review
- Shifting to Plant-Based Protein Diets Alters Nutrient Adequacy Across Age Groups: A Dutch Dietary Modeling Study.Nutrients · 2026Article
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- Erratum for
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6 authors.
Funding
No grant is acknowledged in the PubMed record.
Abstract
backgroundA more sustainable diet with fewer animal-based products has a lower ecological impact but might lead to a lower protein quantity and quality. The extent to which shifting to more plant-based diets impacts the adequacy of protein intake in older adults needs to be studied.
objectivesWe simulated how a transition towards a more plant-based diet (flexitarian, pescetarian, vegetarian, or vegan) affects protein availability in the diets of older adults.
settingCommunity.
participantsData from the Dutch National Food Consumption Survey 2019-2021 of community-dwelling older adults (n = 607) was used. MEASUREMENTS: Food consumption data was collected via two 24-h dietary recalls per participant. Protein availability was expressed as total protein, digestible protein, and utilizable protein (based on digestibility corrected amino acid score) intake. The percentage below estimated average requirements (EAR) for utilizable protein was assessed using an adjusted EAR.
resultsCompared to the original diet (∼62% animal-based), utilizable protein intake decreased by about 5% in the flexitarian, pescetarian and vegetarian scenarios. In the vegan scenario, both total protein intake and utilizable protein were lower, leading to nearly 35% less utilizable protein compared to the original diet. In the original diet, the protein intake of 7.5% of men and 11.1% of women did not meet the EAR. This slightly increased in the flexitarian, pescetarian, and vegetarian scenarios. In the vegan scenario, approximately 60% had a protein intake below EAR.
conclusionsReplacing animal-based protein sources with plant-based food products in older adults reduces both protein quantity and quality, albeit minimally in non-vegan plant-rich diets. In a vegan scenario, the risk of an inadequate protein intake is imminent.
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