Protein past 65: why the need rises as appetite falls
The 30-second answer
The PROT-AGE expert group (2013) recommends 1.0 to 1.2 grams of protein per kilogram of body weight per day for healthy people 65 and older — more than the 0.8 g/kg still often quoted as a general rule of thumb. Active older adults benefit from at least 1.2 g/kg, and 1.2 to 1.5 g/kg is recommended with acute or chronic illness; the European society ESPEN adds systematic malnutrition screening as a standard in geriatric care. The reason for the higher need lies in so-called anabolic resistance: older muscle needs considerably more protein per meal to trigger the same building response as younger muscle — research puts this at around 0.4 g/kg per meal versus about 0.24 g/kg in young adults. That is why total daily amount is not the only thing that counts — distribution across at least three meals does too; no meal should go without protein entirely. A 2026 network meta-analysis (36 studies) confirms the benefit of added whey protein for muscle building, with a plateau around 30 to 35 grams a day — though the whey advantage is weaker in people over 65 than in younger adults (caveat: only nine trials in this subgroup, still uncertain). And the honest limit: a 2025 meta-analysis found that protein supplementation alone produced a moderate strength improvement but no improvement in body composition — plus a signal for higher fasting insulin and HOMA-IR. Protein works on muscle best together with strength training, and a plate generally beats a scoop. The one important exception to these amounts: with severe, non-dialysis kidney impairment (eGFR below 30), only a doctor should set the right amount.
What's proven — and what isn't
| Area | Evidence | Statement |
|---|---|---|
| Higher protein needs from 65 | A | The PROT-AGE expert group (2013) recommends 1.0 to 1.2 g of protein per kilogram of body weight per day for healthy adults over 65, at least 1.2 g/kg with physical activity, and 1.2 to 1.5 g/kg with acute or chronic illness. The ESPEN practical guideline (2022) adds systematic malnutrition screening as a geriatric standard. |
| Distribution across meals | B | Older muscle needs around 0.4 g of protein per kilogram of body weight per meal for the full muscle-building stimulus — considerably more than the roughly 0.24 g/kg sufficient in young adults. In practice: at least three solid portions spread across the day, with no meal left entirely protein-free. What that looks like concretely at breakfast is covered in the <a href="/en/knowledge/protein-fruehstueck">protein breakfast dossier</a>. |
| Protein plus strength training | B | A 2026 network meta-analysis (36 randomised trials) confirms: added whey protein alongside strength training increases lean mass by an average of 1.24 kg, with a plateau around 30 to 35 grams a day. In people over 65 this advantage tends to be weaker than in younger adults (only nine trials, still uncertain) — one more reason to prioritise the training stimulus and not just the powder. |
| "A protein shake replaces training" | — | A 2025 meta-analysis found that protein supplementation alone produced a moderate strength improvement but no improvement in body composition — plus a signal for higher fasting insulin and HOMA-IR values. Protein supports the muscle stimulus that only movement creates; the powder comes after training, not instead of it. |
| "Lots of protein harms healthy kidneys" | — | Carefully framed: for healthy kidneys, guidelines show no evidence of harm at the recommended amounts (up to around 1.5 g/kg). The important exception: with severe, non-dialysis kidney impairment (eGFR below 30), only a doctor should set the right protein amount — self-deciding has no place here. |
Evidence grades: A = strongly supported · B = supported in the right context · C = emerging/mixed evidence · D = experimental · — = no proven benefit. Quoted statements with a regulation number are officially reviewed health claims authorised by the EU — we use only those.
Why the need rises: anabolic resistance explained
Young muscle responds to a relatively small amount of protein per meal with a full muscle-building signal already. Older muscle needs considerably more for the same stimulus: research on so-called anabolic resistance puts the difference at around 0.4 grams of protein per kilogram of body weight per meal in older adults versus about 0.24 g/kg in young adults. The muscle has not stopped listening — it just needs a louder signal. That is why the old rule of thumb "0.8 grams per kilo is enough" is outdated for this stage of life: it was originally designed as a minimum to avoid deficiency, not as a target for preserving muscle strength and function in older age. Anyone additionally doing serious strength training orients on the general training range of 1.2 to 1.6 g/kg (see the protein guide) — the PROT-AGE values are the age-specific health baseline, not a ceiling for people who train.
The numbers: what 1.0 to 1.5 g/kg actually means
Worked through with an example at 70 kilograms of body weight: 1.0 g/kg equals 70 grams of protein a day, 1.2 g/kg is 84 grams, and the upper recommendation for illness, 1.5 g/kg, is 105 grams. Spread across three meals, that is roughly 25 to 35 grams per meal depending on the target — achievable with a portion of quark or skyr, two to three eggs, a palm-sized portion of fish or meat, or a good portion of legumes. The PROT-AGE group recommends 1.0 to 1.2 g/kg for healthy older adults, at least 1.2 g/kg with physical activity, and 1.2 to 1.5 g/kg with acute or chronic illness. The one exception to these targets: with severe, non-dialysis kidney impairment (eGFR below 30), only medical care determines the right amount.
The practical hurdles: when appetite, teeth and company are missing
The recommendation is simple; everyday life often is not. Appetite declines with age, chewing can be difficult due to dental problems or ill-fitting dentures, swallowing can be uncomfortable, and eating alone takes the pleasure out of eating for many people altogether. Concrete, soft, protein-rich options for exactly these situations: skyr or low-fat quark (creamy, barely any chewing needed), soft-boiled or poached eggs, pureed legumes (lentil or chickpea puree, also as soup), soft, steamed fish, and fortified soups — a spoonful of milk powder, quark, or a beaten egg noticeably raises the protein content of a familiar soup without changing its taste or volume much. Smaller, more frequent portions are often easier to manage than three large meals.
When this belongs in a doctor's office
Three situations belong in a doctor's office, not in self-management: unintentional weight loss (a central warning sign that the ESPEN guideline explicitly names as a reason for malnutrition screening), diagnosed kidney disease (with severe, non-dialysis impairment and eGFR below 30, only medical care sets the protein amount — more is not automatically better here), and swallowing difficulties (dysphagia requires adjusted textures and belongs in speech-therapy or medical assessment, not self-experimentation). For everyone else: protein is a building block alongside strength training, not its replacement — the practical side of that is covered in the sarcopenia dossier.
Sources
- 1. Bauer et al. — Evidence-based recommendations for optimal dietary protein intake in older people: a position paper from the PROT-AGE Study Group (JAMDA 2013) — Accessed on: 2026-08-26
- 2. Volkert et al. — ESPEN practical guideline: Clinical nutrition and hydration in geriatrics (Clinical Nutrition 2022) — Accessed on: 2026-08-26
- 3. Moore et al. — Protein ingestion to stimulate myofibrillar protein synthesis requires greater relative protein intakes in healthy older versus younger men (Journals of Gerontology Series A 2015) — Accessed on: 2026-08-26
- 4. Li et al. — Dose-structure-population interactions of protein supplementation combined with resistance training on body composition: Bayesian network meta-analysis (36 RCTs; Frontiers in Nutrition 2026) — Accessed on: 2026-08-26
- 5. Khalafi et al. — Effects of Whey Protein Supplementation on Body Composition, Muscular Strength, and Cardiometabolic Health in Older Adults: systematic review with pairwise meta-analysis (Healthcare 2025) — Accessed on: 2026-08-26
This dossier is independent information and no substitute for medical diagnosis or treatment. For symptoms or questions about your thyroid, medication or supplements, talk to your doctor or pharmacist. This article deliberately contains no product advertising and no purchase links.