The Protein Question
The current Recommended Dietary Allowance (RDA) of 0.8 g/kg/day was designed to prevent deficiency — not to optimize muscle health in aging adults. Both the PROT-AGE Study Group and the European Society for Clinical Nutrition and Metabolism (ESPEN) now recommend 1.0–1.2 g/kg/day for healthy adults over 65, rising to 1.2–1.5 g/kg/day for those who are physically active or managing chronic conditions.
A 2025 randomized controlled trial by Church et al. found that within a 2-meal eating pattern, consuming 1.5 g/kg/day produced significantly more positive whole-body net protein balance than either 0.8 or 1.1 g/kg/day — evidence that the current RDA may leave older adults in a suboptimal protein state.
The Health ABC Study (Houston et al., 2008), following 2,066 older adults over three years, found that participants in the highest protein intake quintile lost 40% less lean mass than those in the lowest quintile. Despite this evidence, roughly 30% of men and 50% of women over 71 in the United States consume inadequate protein (Harris et al., 2025).
Morgan et al. (2025)
Protein recommendations for healthy muscle ageing
Church et al. (2025)
Effect of 3 different daily protein intakes on protein turnover
Houston et al. (2008)
Dietary protein intake and lean mass change in older adults
Per-Meal Protein Targets
Total daily protein matters, but so does how you distribute it across meals. Older adults need at least 25–30 g of protein per meal (roughly 0.4 g/kg/meal) to maximally stimulate muscle protein synthesis (MPS).
The MPS response has a finite duration of about 2–3 hours post-meal, which means a single large dinner is suboptimal compared to spreading protein intake evenly. Research by Layman (2024) shows that meals need at least 2.8 g of leucine — found in approximately 30 g of high-quality protein — to reliably trigger MPS in adults over 60.
Hayashi et al. (2020) found that the number of meals containing at least 20 g of protein was significantly associated with greater lean mass in frail elderly participants. Schoenfeld & Aragon (2018) recommend targeting 0.4 g/kg/meal across at least four meals daily for maximum anabolic benefit.
Layman (2024)
Impacts of protein quantity and distribution on body composition
Hayashi et al. (2020)
Number of high-protein meals correlates with muscle mass
Schoenfeld & Aragon (2018)
How much protein can the body use in a single meal
Protein Calculator
Use this calculator to estimate your daily protein target based on current research. Enter your details below.
Beyond Protein: Diet Quality
The Mediterranean diet is the most-studied dietary pattern for cardiovascular and cognitive health in older adults. The landmark PREDIMED trial (Estruch et al., 2013), enrolling 7,447 participants, demonstrated a 30% reduction in major cardiovascular events with a Mediterranean diet compared to a control diet over approximately five years.
A related randomized controlled trial by Valls-Pedret et al. (2015) found that a Mediterranean diet supplemented with extra-virgin olive oil or mixed nuts countered age-related cognitive decline over four or more years in 447 participants.
Diet composition affects health both directly and through the gut microbiota (Perler et al., 2023). A Cochrane review by Abdelhamid et al. (2018), encompassing 49 RCTs, concluded that increasing polyunsaturated fatty acid intake probably slightly reduces coronary heart disease and cardiovascular events.
Estruch et al. (2013)
Primary prevention of CVD with Mediterranean diet
Valls-Pedret et al. (2015)
Mediterranean diet and cognitive decline
Creatine and Supplementation
Creatine monohydrate, when combined with resistance training, increases lean body mass by approximately 1 kg and improves upper-body strength and grip strength in older adults. About 70% of adults over 65 consume less than the recommended creatine intake.
A 2024 meta-analysis by Davies et al., pooling 33 randomized controlled trials, found that creatine supplementation improved sit-to-stand performance (SMD 0.51) and increased lean tissue mass by 1.08 kg.
Context matters: the global supplement market exceeds $200 billion, and many products lack strong evidence (Khubchandani & Batra, 2024). Creatine monohydrate stands out as one of the few supplements with robust, replicated research support. Always consult a healthcare provider before starting any supplement.
Davies et al. (2024)
Creatine supplementation for optimization of physical function
Candow et al. (2025)
Creatine monohydrate supplementation for older adults
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