Summary
This narrative review examines nutritional influences on age-related muscle loss beyond the well-studied protein and amino acid relationship. The paper describes mechanistic pathways of anabolic and catabolic processes in skeletal muscle and reviews limited evidence for vitamin D, dietary acid-base balance, antioxidants (vitamins C and E), and dietary fat in preventing sarcopenia. The authors call for expanded dietary recommendations to include fruits, vegetables, and micronutrients alongside protein for sarcopenia prevention.
Regional applicability
The review is mechanistic and nutritional in focus rather than geography-specific, making findings broadly applicable to UK population health and clinical practice. However, the review notes that evidence for most non-protein nutrients remains limited, suggesting UK-specific research and dietary intervention trials would strengthen applicability to UK populations at risk of sarcopenia.
Key measures
Skeletal muscle mass; protein turnover pathways (mTOR, IGF-1-Akt-FoxO); catabolic mechanisms (ubiquitin proteasome system, apoptosis, autophagy, inflammation, oxidation, insulin resistance); vitamin D status; dietary acid-base load; antioxidant nutrient intake
Outcomes reported
The paper reviews the association between various nutritional factors (beyond protein) and age-related skeletal muscle loss, examining mechanisms of muscle protein turnover imbalance and catabolism. It identifies vitamin D, dietary acid-base load, dietary fat, and antioxidant nutrients as potential protective factors against sarcopenia.
Topic tags
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