Summary
This narrative review examines the nutritional implications of the so-called protein transition — the population-level dietary shift away from animal proteins, particularly dairy, towards plant-based alternatives. The authors argue that simple substitution of dairy protein with plant protein results in reduced protein quality and compromised micronutrient intake, partly due to antagonistic matrix effects in plant foods that reduce bioavailability and are not adequately captured in standard food composition data or dietary guidelines. The paper further highlights the dairy matrix effect on blood lipid modulation and calls for broader, non-muscle-centric approaches to protein recommendations.
UK applicability
The findings are directly applicable to UK nutrition policy and dietary guidance, particularly given ongoing revisions to sustainable dietary recommendations and the UK government's consideration of protein transition pathways; the paper's critique of current dietary guidelines has relevance for bodies such as SACN and the NHS Eatwell Guide.
Key measures
Protein digestibility-corrected amino acid score (PDCAAS) or digestible indispensable amino acid score (DIAAS); micronutrient bioavailability; blood lipid levels; anabolic response to protein intake
Outcomes reported
The paper evaluates protein quality, micronutrient bioavailability, and physiological effects associated with replacing dairy protein with plant-based alternatives, including impacts on muscle anabolism, blood lipid profiles, and micronutrient intake.
Topic tags
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