Protein and age: your muscles after 30, 50 and 65
After 30, muscle mass shrinks by about 3 to 8% per decade, and after 65 European expert groups recommend at least 1.0 to 1.2 g of protein per kilogram of body weight a day, along with daily movement. You may already feel it: the grocery bags get heavy sooner, and the stairs to the third floor call for a breather halfway up. Here you'll find out exactly what changes, what sarcopenia is, how much protein experts recommend after 65 and how movement and your plate work together.
In short
- After 30, muscle mass shrinks by about 3 to 8% per decade, and faster after 60 (Volpi et al., 2004).
- Sarcopenia is the loss of muscle strength and mass with age. European doctors look for it by checking strength first.
- Movement is your main move. Protein contributes to the maintenance of muscle mass, and in a 2022 review the extra muscle showed up in people doing resistance exercise.
- After 65, the PROT-AGE and ESPEN experts recommend at least 1.0 to 1.2 g of protein per kilogram a day.
- Older muscles need more protein at a single meal: about 0.4 g per kilogram.
What happens to your muscles after 30
Muscle is a big part of you. In a study of 468 people aged 18 to 88, skeletal muscle made up about 38% of body weight in men and about 31% in women.
Over the years, that share slowly shrinks. According to a review by Volpi and colleagues, muscle mass drops by about 3 to 8% per decade after 30, and the pace picks up after 60. The same study of 468 people shows that the visible loss in kilograms comes later, around the late 40s, and mostly affects the legs.
What does that mean on an ordinary day? Your legs get you up from the chair, take you up the stairs and carry the grocery bags home. That's why they're worth looking after in good time.
Sarcopenia, calmly explained
Sarcopenia is the medical word for losing muscle strength and mass with age. In 2019 the European Working Group on Sarcopenia in Older People (EWGSOP2) updated the definition. The main sign is now low muscle strength.
Doctors check strength with simple tests. Under the consensus, a signal of low strength is a hand grip under 27 kg in men and under 16 kg in women, or needing more than 15 s to stand up from a chair 5 times. The diagnosis is a doctor's call, so if something worries you, ask yours.
The working group makes another important point: the process can start earlier in life. That's why it recommends a lifelong approach: build muscle when you're young, maintain it in middle age and slow the loss later on.
In other words, this touches almost every Bulgarian family: you today, or your parents and grandparents.
Movement is the first move
You keep muscle by using it. The expert group of ESPEN, Europe's clinical nutrition society, writes that all older people should be physically active every day, for as long as they can. That means both resistance exercise and activities like walking, swimming or cycling.
The World Health Organization (WHO) gives concrete numbers. Adults need 150 to 300 minutes of moderate activity a week and muscle-strengthening exercise on at least 2 days a week. After 65, the WHO adds varied activity for balance and strength on at least 3 days a week.
Your muscles can work at home and outdoors: getting up from a chair without using your hands, taking the stairs, carrying the grocery bags, digging in the garden, dancing in the living room. Start where you are and build up gradually. If you have a chronic condition, ask your doctor what's right for you.
Protein plus movement
Protein contributes to the maintenance of muscle mass. But how does it tie in with movement? A large 2022 review pooled 74 randomized studies. More protein gave a small but clear extra gain in muscle mass when people did resistance training. Without that kind of exercise, the effect wasn't statistically significant.
In people over 65, the effect showed up at 1.2 to 1.59 g of protein per kilogram a day, again together with exercise. The takeaway is simple: the two work as a team. There's more on muscle and protein in Protein and muscle.
Myth
“It's too late at my age.” The European working group describes the goal for later life as slowing the loss, and the WHO recommends strength and balance exercise specifically for people over 65. The exercise studies pooled in the 2022 review include people over 65 too.
How much protein after 65
The European Food Safety Authority (EFSA) gives one number for all adults, including after 65: 0.83 g per kilogram a day. In EFSA's assessment, protein intake in Europe is adequate for every population group.
Two European expert groups advise more for people over 65. PROT-AGE (2013) and ESPEN (2014) recommend at least 1.0 to 1.2 g per kilogram a day for healthy older people. For active people, PROT-AGE gives 1.2 g or more.
| Weight | EFSA (0.83 g/kg) | After 65 (1.0 to 1.2 g/kg) | Per meal (0.4 g/kg) |
|---|---|---|---|
| 60 kg | 50 g | 60 to 72 g | 24 g |
| 70 kg | 58 g | 70 to 84 g | 28 g |
| 80 kg | 66 g | 80 to 96 g | 32 g |
Important
With severe kidney disease, the recommendations are different. ESPEN gives 0.6 to 0.8 g per kilogram, and PROT-AGE writes that intake may need to be limited. If that's your situation, ask your doctor before you change how much protein you eat.
More protein on one plate
With age, muscles respond less strongly to the protein in food. ESPEN calls this anabolic resistance. Put simply, the same signal to the muscle takes a bigger helping of protein.
In a 2015 analysis by Moore and colleagues, men around 71 needed about 0.40 g of protein per kilogram at a single meal, and men around 22 about 0.24 g. For someone who weighs 70 kg, that's about 28 g on one plate.
And what do older people actually eat? In the Netherlands, among 1 279 people, breakfast brought only 10 to 12 g of protein and dinner 24 to 31 g. Mornings have the most room for improvement. How to plan your day is covered in How to spread your protein through the day.
What this looks like on the plate
Here's an ordinary day for someone who is 70 years old and weighs 70 kg. The numbers are calculated from USDA FoodData Central, the US public database of food composition.
- Breakfast. Two eggs, 50 g of Bulgarian white cheese and a slice of bread: about 22.3 g.
- Lunch. 200 g of beans and two slices of bread: about 24.6 g.
- Afternoon. 150 g of cottage cheese with green onions: about 16.7 g.
- Dinner. 200 g of pasta with 50 g of white cheese: about 18.7 g.
That's about 82 g in total, right on the 70 to 84 g target. The individual meals, though, stay under 28 g. One more boiled egg at breakfast (6.3 g) and 150 g of strained yogurt with lunch (13.5 g) take those two meals past 28 g. Another option is 1 serving (30 g) of MEALUP in your soup or mashed potatoes: at least 20 g of protein from egg white and milk protein, with no change to the recipe.
Tip
If chewing is hard, choose soft foods with protein: cottage cheese, yogurt, fried or scrambled eggs, creamy lentil soup, meatballs in sauce. Smaller portions more often work too.
Frequently asked questions
I'm 40. Is it too early to think about this?
It's right on time. The European working group advises maintaining your muscles in middle age, before the loss speeds up after 60.
Is eating more protein enough on its own?
Protein contributes to the maintenance of muscle mass. In the 2022 review, though, the gain in muscle mass showed up when people did resistance training. Your plate and movement go together.
My mother is 78 and eats very little. What can we do?
Put protein in every meal, even in small amounts: an egg, white cheese, yogurt, beans. If her appetite has been poor for a long time or she's losing weight, ask her doctor.
Does more protein harm the kidneys?
For healthy adults, an intake of up to twice the EFSA recommendation is considered safe (European Commission, 2026). With kidney disease the rules are different, so ask your doctor. More in Protein myths.
How do I work out my exact number?
If you're over 65, multiply your weight by 1.0 to 1.2. Detailed calculations are in How much protein you need a day.
Your muscles respond to what you do with them, at any age. The stairs, the garden and a slice of white cheese at breakfast are a good start.
Sources
- Volpi E., Nazemi R., Fujita S., “Muscle tissue changes with aging”, Current Opinion in Clinical Nutrition and Metabolic Care, 2004
- Janssen I., Heymsfield S. B., Wang Z. M., Ross R., “Skeletal muscle mass and distribution in 468 men and women aged 18-88 yr”, Journal of Applied Physiology, 2000
- Cruz-Jentoft A. J., Bahat G., Bauer J. et al., “Sarcopenia: revised European consensus on definition and diagnosis”, Age and Ageing, 2019
- Eurostat, “Population structure and ageing”, Statistics Explained, data as of January 1, 2025
- Deutz N. E. P., Bauer J. M., Barazzoni R. et al., “Protein intake and exercise for optimal muscle function with aging: Recommendations from the ESPEN Expert Group”, Clinical Nutrition, 2014
- Bull F. C., Al-Ansari S. S., Biddle S. et al., “World Health Organization 2020 guidelines on physical activity and sedentary behaviour”, British Journal of Sports Medicine, 2020
- Nunes E. A., Colenso-Semple L., McKellar S. R. et al., “Systematic review and meta-analysis of protein intake to support muscle mass and function in healthy adults”, Journal of Cachexia, Sarcopenia and Muscle, 2022
- EFSA, “EFSA sets population reference intakes for protein”, press release, 2012
- European Commission, Knowledge for Policy, “Dietary recommendations for protein intake for adults and older adults”, 2026
- Bauer J., Biolo G., Cederholm T. et al., “Evidence-based recommendations for optimal dietary protein intake in older people: a position paper from the PROT-AGE Study Group”, Journal of the American Medical Directors Association, 2013
- Moore D. R., Churchward-Venne T. A., Witard O. et al., “Protein ingestion to stimulate myofibrillar protein synthesis requires greater relative protein intakes in healthy older versus younger men”, The Journals of Gerontology: Series A, 2015
- Tieland M., Borgonjen-Van den Berg K. J., van Loon L. J., de Groot L. C., “Dietary Protein Intake in Dutch Elderly People: A Focus on Protein Sources”, Nutrients, 2015
- USDA, FoodData Central: egg 171287, feta 173420, white bread 174924, white beans 175203, cottage cheese 172179, pasta 169737, strained yogurt 171304
