Hvorfor moderat proteininntak ofte er bedre enn «mest mulig»

Protein has gained an almost iconic status in fitness culture and health discussions. Many people are left with the impression that the more protein they consume, the better their health, muscle mass, and recovery will be. Research, however, presents a far more nuanced picture.

The role of protein in the body

Protein is essential for building and maintaining muscle tissue, hormones, enzymes, and immune function. Too little protein can lead to muscle loss, impaired recovery, and increased risk of functional decline, especially in older adults.

At the same time, this does not mean that very high protein intake automatically provides additional benefits.

What research says about amount

Systematic reviews show that:

• For most adults, an intake of around 0.8–1.2 g of protein per kg of body weight is sufficient

• During strength training and rehabilitation, needs may increase to approximately 1.2–1.6 g/kg

• Intakes beyond this range usually provide little or no additional benefit for muscle growth

Muscle protein synthesis has a ceiling. Once this is reached, excess protein is primarily used as energy or stored as fat.

Potential downsides of high protein intake

Chronically high protein intake may have unintended consequences, particularly when the diet is also:

• Low in dietary fiber

• High in ultra-processed protein sources

• Dominated by red and processed meats

Studies suggest increased renal stress in vulnerable populations and a potential rise in cardiovascular risk when high protein intake is combined with unfavorable fat and sodium profiles.

Timing and quality matter more than extreme quantity

Evidence indicates that:

• Even distribution of protein across meals is more effective than large single doses

• Protein quality and amino acid composition influence outcomes

• The combination of protein intake and resistance training is crucial

These principles apply across age groups and in rehabilitation settings.

Implications for training and physiotherapy

In physiotherapy and rehabilitation, protein-related dietary advice should:

• Be tailored to functional level and training load

• Account for age and overall health status

• Emphasize whole-diet quality rather than isolated nutrients

Extreme dietary strategies rarely produce better functional outcomes than balanced, sustainable approaches.

Summary

Protein is essential, but more is not always better. For most individuals, a moderate, well-distributed, and high-quality protein intake provides the greatest benefit for health, training, and functional recovery. The focus should be on balance, not maximalism.

Sources

• Morton, R. W., et al. (2018). A systematic review, meta-analysis and meta-regression of the effect of protein supplementation on resistance training–induced gains. British Journal of Sports Medicine, 52(6), 376–384.

• Phillips, S. M., & Van Loon, L. J. C. (2011). Dietary protein for athletes. Journal of Sports Sciences, 29(S1), S29–S38.

• Devries, M. C., & Phillips, S. M. (2015). Supplemental protein in support of muscle mass and health. American Journal of Clinical Nutrition, 101(6), 1336S–1341S.