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Protein for life: Review of optimal protein intake, sustainable dietary sources and the effect on appetite in ageing adults

Lookup NU author(s): Dr Anthony Watson, Professor Emma Stevenson



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


© 2018 by the authors. Licensee MDPI, Basel, Switzerland. With an ageing population, dietary approaches to promote health and independence later in life are needed. In part, this can be achieved by maintaining muscle mass and strength as people age. New evidence suggests that current dietary recommendations for protein intake may be insufficient to achieve this goal and that individuals might benefit by increasing their intake and frequency of consumption of high-quality protein. However, the environmental effects of increasing animal-protein production are a concern, and alternative, more sustainable protein sources should be considered. Protein is known to be more satiating than other macronutrients, and it is unclear whether diets high in plant proteins affect the appetite of older adults as they should be recommended for individuals at risk of malnutrition. The review considers the protein needs of an ageing population (>40 years old), sustainable protein sources, appetite-related implications of diets high in plant proteins, and related areas for future research.

Publication metadata

Author(s): Lonnie M, Hooker E, Brunstrom JM, Corfe BM, Green MA, Watson AW, Williams EA, Stevenson EJ, Penson S, Johnstone AM

Publication type: Review

Publication status: Published

Journal: Nutrients

Year: 2018

Volume: 10

Issue: 3

Online publication date: 16/03/2018

Acceptance date: 14/03/2018

ISSN (electronic): 2072-6643

Publisher: MDPI AG


DOI: 10.3390/nu10030360