The Baseline vs. What is Actually Needed
Protein Requirements for Active Seniors:
Understanding the Protein Requirements for Active Seniors: is crucial for maintaining strength and overall health.
The current Recommended Dietary Allowance (RDA) for protein in adults is 0.8 g/kg of body weight. However, for older adults at increased risk of muscle and strength loss, increasing intake above the RDA may support improvements in protein-related physiological functions with an optimal range of 0.45g–0.55 g/lb/day for improved muscle protein synthesis (MPS) (muscle growth) and maintenance of lean body mass (your muscle tissue). So let me convert this to lbs to give you a better understanding, as we, for the most part, weigh ourselves in lbs. In lbs., the minimum requirement would be 0.5 grams – 0.55 grams/lb/day. I weigh 173 lb. So, my minimum requirement is 173 lb × 0.55 g/lb/day = 95g/day. https://solidtothecore.com/whey-protein-shake-after-50-benefits/
However, I am exercising over 6 -8 hours per week, so my Protein consumption levels must be around 0.65g/lb/day. or 110-115g per day to maintain muscle mass.
Specifically for Active/Exercising Seniors
The PROT-AGE Study Group (a major expert consensus) recommends ≥ 0.54 g/lb of body weight/day for older adults who are exercising and otherwise active, with both endurance- and resistance-type exercise recommended at individualized levels that are safe and tolerated. PubMed
Observational and acute feeding studies support recommendations for older adults to consume 0.5g–.75 g/lb of body weight/day, including one, preferably more, meals per day with sufficient protein. Oxford Academic. So, in the morning, I consume a protein shake composed of frozen berries, unsweetened oat milk, stevia ( a natural sweetener) ( I do not need the sucrose (sugar), and a 35 g scoop of unflavored whey Protein isolate, which is 85% whole protein, and one of the highest PDCAA scores. (Protein Digestibility Corrected Amino Acid) . I will talk about that in a subsequent post.
Why Seniors Need More Than Younger Adults
Among medically stable older adults, protein intakes below the RDA ( Recommended Daily Allowance (< 0.4 g/lb/day) exacerbate age-related reductions in muscle size, quality, and function. Some observational studies suggest intakes of 1.0–1.6 g/kg/day may promote greater muscle strength and function, more so than just muscle size. Oxford Academic
Resistance Exercise + Higher Protein Doses
In contrast to younger adults, in whom post-exercise rates of muscle protein synthesis are maximized with 20g of protein, exercised muscles of older adults respond to higher protein doses of 20–40g. Most older adults will therefore benefit from higher protein intake. ESPEN
Bone Health Benefits
A 2019 systematic review and meta-analysis showed that higher protein intake was associated with a significant 11% reduction in hip fractures. Observational data also show that older adults with higher protein intake (> 0.55 g/lb/day) had notably higher hip and lumbar spine bone mineral density compared to those with lower intake (~0.4 g/lb/day). PubMed Central
The Gap
Up to 71% of older adults (65+) do not get enough protein in their everyday meals, and research shows that when older adults eat more protein than is recommended for younger adults, they experience improved muscle mass, a lower prevalence of bone fractures, and a stronger immune system. University of New Hampshire Extension
Important Caveat: Kidney Disease
Among older populations diagnosed with or at risk of chronic kidney disease (CKD), there is concern that high protein intakes (1.2–2.0 g/kg/day) may lead to kidney damage. Traditional dietary protein restriction (≤ 0.5 g/lb/day) has been a critical intervention for older patients with CKD to manage and slow disease progression. MDPI
Summary: Protein Requirements for Active Seniors
The takeaway for the medically stable senior population is, you NEED to be more aware of how much protein you are taking in each day after doing the calculation I elucidated above in this post.
1.) Start educating yourself by reading nutrition labels
2.) Find a low-sugar RTD (ready to drink) protein supplement to get that daily number up in the range
Key Sources to Explore Further
- PROT-AGE Study Group (JAMDA, 2013) — foundational expert consensus
- ESPEN Workshop on Protein Requirements in the Elderly (Clinical Nutrition, 2014)
- Frontiers in Nutrition — Groenendijk et al. (2024) — muscle and bone health review
- Journals of Gerontology: Series A (Oxford, 2023) — skeletal muscle interventions
- MDPI Nutrients (2025) — recent review on protein and aging practicalities