Why the Official Recommendation Falls Short
The European Food Safety Authority (EFSA) recommends 0.83 g of protein per kilogram of body weight per day for adults. This is enough to prevent deficiency — but it is not enough for muscle building, improved athletic performance, or meaningful changes in body composition.
A landmark meta-analysis covering 49 studies and more than 1,800 participants found that the optimal protein intake for muscle hypertrophy is approximately 1.62 g per kilogram of body weight per day, with gains plateauing at around 2.2 g/kg (Morton et al., 2018).
Protein Targets by Goal
Muscle building
- Target: 1.6–2.2 g/kg body weight
- Example for a 75 kg person: 120–165 g of protein per day
- Note: most research suggests 1.6 g/kg captures roughly 95% of the maximum possible benefit
Fat loss (caloric deficit)
- Target: 2.0–2.4 g/kg body weight
- Reason: caloric restriction accelerates muscle breakdown — higher protein intake protects lean mass (Helms et al., 2014)
- Example for a 75 kg person: 150–180 g per day
General health and endurance training
- Target: 1.2–1.6 g/kg
- Example for a 75 kg person: 90–120 g per day
Adults over 65
- Target: at least 1.2–1.6 g/kg (to prevent sarcopenia)
- Older adults require more leucine per serving to trigger MPS (Churchward-Venne et al., 2016)
Daily Protein Planning: A Sample Day
Assume you are a 70 kg strength athlete targeting muscle growth:
| Meal | Source | Protein |
|---|---|---|
| Breakfast | 3 eggs + 200 ml Greek yoghurt | ~35 g |
| Lunch | 150 g chicken breast + legumes | ~45 g |
| Snack | Protein shake | ~25 g |
| Dinner | 150 g salmon + legumes | ~40 g |
| Total | ~145 g |
When Are Protein Supplements Useful?
Whole food should cover most of your daily protein target. Supplements fill the gap conveniently when whole-food sources are impractical.
MyProtein Impact Whey Protein 1 kg Strawberry Cream delivers 21 g of protein per serving with a lean calorie count. Optimum Nutrition Gold Standard 100 whey protein 930g chocolate orange is a premium option that provides an outstanding amino acid profile and high biological value — both are available at maxfit.ee's protein supplement category.
Can You Eat Too Much Protein?
In healthy individuals, high protein intakes (up to 3.5 g/kg) have shown no adverse health effects (Antonio et al., 2016). Those with kidney stones or existing kidney disease should discuss protein intake with their physician.
From a muscle-building standpoint, the practical ceiling is around 2.2 g/kg — beyond that, additional protein adds calories without adding extra hypertrophic stimulus.
Protein Quality: Not All Grams Are Equal
The amino acid profile and biological value of protein sources matter:
| Source | Biological Value | Leucine % |
|---|---|---|
| Whey isolate | 159 | ~11% |
| Egg white | 100 | ~9% |
| Chicken breast | ~79 | ~8% |
| Soy protein | ~74 | ~8% |
| Pea protein | ~65 | ~8% |
Protein and Hormonal Health
Adequate protein intake supports optimal anabolic hormone levels. IGF-1 (insulin-like growth factor-1) and growth hormone secretion are both connected to amino acid availability in the bloodstream. Chronically low protein intake (under 0.8 g/kg) has been associated with suboptimal testosterone in men and cortisol instability in both sexes.
Practical Ways to Track Your Daily Protein Without Apps
The simplest tracking method is the palm technique: one palm-sized portion of cooked meat equals approximately 25–35 g of protein, one egg provides ~6 g, and 200 ml of Greek yoghurt provides ~17 g. For most people, meeting protein targets requires deliberately including a quality protein source at every meal — not relying on incidental protein from mixed dishes.
Protein Across Different Life Stages
Protein needs are not fixed across life — they vary with age, training phase, and health status. Adolescents in active growth phases may need up to 1.8 g/kg to support both growth and training. Adults in a bulking phase target 1.6–2.2 g/kg. Adults in a fat-loss phase need 2.0–2.4 g/kg to preserve muscle. Adults over 65 need at least 1.2–1.6 g/kg to combat sarcopenia. Understanding which stage applies to you is the foundation of a smart protein strategy.
FAQ
Does more protein always mean more muscle?
Up to a point — yes. Beyond approximately 2.2 g/kg per day, additional protein provides no extra hypertrophic benefit. Caloric surplus and progressive training are equally important drivers of muscle growth.
Is it harder for vegetarians to meet protein needs?
Slightly — lower biological value and leucine content in plant sources add a mild challenge, but it is entirely solvable. Tofu, seitan, pea protein, legumes, and whole grains in combination cover daily requirements well.
How much protein do I need to lose weight?
During fat loss, higher protein (2.0–2.4 g/kg) is especially important for preserving lean mass during a caloric deficit. Protein also has the highest satiety and thermic effect of any macronutrient, which helps control overall calorie intake.
References
- Morton, R. W., Murphy, K. T., McKellar, S. R., Schoenfeld, B. J., Henselmans, M., Helms, E., & Phillips, S. M. (2018). A systematic review, meta-analysis and meta-regression of the effect of protein supplementation on resistance training-induced gains in muscle mass and strength. British Journal of Sports Medicine, 52(6), 376–384.
- Helms, E. R., Zinn, C., Rowlands, D. S., & Brown, S. R. (2014). A systematic review of dietary protein during caloric restriction in resistance trained lean athletes. International Journal of Sport Nutrition and Exercise Metabolism, 24(2), 127–138.
- Churchward-Venne, T. A., Holwerda, A. M., Phillips, S. M., & van Loon, L. J. C. (2016). What is the optimal amount of protein to support post-exercise skeletal muscle reconditioning in the older adult? Sports Medicine, 46(9), 1205–1212.
- Antonio, J., Ellerbroek, A., Silver, T., Orris, S., Scheiner, M., Gonzalez, A., & Peacock, C. A. (2016). A high protein diet (3.4 g/kg/d) combined with a heavy resistance training program improves body composition in healthy trained men and women. Journal of the International Society of Sports Nutrition, 13(1), 16.
