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How Much Protein Do You Actually Need? The Official Number, the Newer Science — and Why It Matters More for Your Parents

9 August 2026·7 min read
Sources of this article were verified3 scientific references with direct, checkable links

Protein isn't just "for people who lift" — it is the first line of defence against age-related muscle loss, and most of us (especially the older people in our homes) don't get enough.

The official number — and its limits

The recommended dietary allowance for adults is 0.8 grams per kilogram of body weight per day — but the international PROT-AGE expert group considers this too low for older people because it was built on studies of younger adults and does not account for the body's changes with age[1].

What does the newer research say?

For those over sixty, PROT-AGE recommends 1.0–1.2 g/kg per day for healthy individuals, and more for those with illness or muscle loss[1]. A meta-analysis of observational studies found that those consuming ≥1.2 g/kg had better lower-limb physical performance than those consuming under 0.8[2], and reviews suggest intakes up to 1.2–1.5 g/kg are safe in healthy older adults[3].

0.8 g/kgofficial allowance
for adults generally
1.0–1.2 g/kgPROT-AGE recommendation
for over-sixties
≥1.2 g/kgassociated with better
physical performance

Translate it into your numbers

Someone weighing 80 kg: the official minimum is 64 g a day; the better target for older adults is 80–96 g. Spread it across meals — the body benefits more from distribution than from one enormous dose at dinner[1].

From our own plates

💪 FitCal's take: The protein ring in the app isn't decoration — track it the way you track calories, especially for your parents. Muscle lost after sixty does not come back easily.

Scientific references

  1. PROT-AGE Study Group position paper — Evidence-based recommendations for optimal dietary protein intake in older people — https://www.sciencedirect.com/science/article/pii/S1525861013003265
  2. Relative protein intake and physical function in older adults: a systematic review and meta-analysis — https://www.ncbi.nlm.nih.gov/pmc/articles/PMC6163569/
  3. Health effects of protein intake in healthy elderly populations: a systematic literature review — https://www.ncbi.nlm.nih.gov/pmc/articles/PMC3926464/

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