{"id":828,"date":"2026-05-17T14:05:46","date_gmt":"2026-05-17T11:05:46","guid":{"rendered":"https:\/\/www.life-on.com.ua\/?p=828"},"modified":"2026-05-17T14:05:47","modified_gmt":"2026-05-17T11:05:47","slug":"protein-intake-deficit-norm-vs-optimum","status":"publish","type":"post","link":"https:\/\/www.life-on.com.ua\/en\/protein-intake-deficit-norm-vs-optimum\/","title":{"rendered":"Protein intake: why 0.83 g\/kg is the minimum, and the optimum is twice that."},"content":{"rendered":"

Official statistics look reassuring. European dietary surveys say that the average man consumes 67\u2013114 g of protein per day, and a woman 59\u2013102 g. This meets or exceeds the recommendation of the European Food Safety Authority. EFSA's conclusion is concise: Protein intake<\/strong> of the European population adequate for all age groups.<\/p>\n\n\n\n

If this is true, why is sarcopenia one of the most pressing issues of ageing in the 21st century? Why, after the age of 60, does the average person lose 25\u201340% of their youthful muscle mass without taking active measures to counteract this? Why do leading researchers in protein metabolism consistently demonstrate in meta-analyses that the optimal level for active people is twice the official norm?<\/p>\n\n\n\n

The answer is that \u00abenough not to die\u00bb and \u00abenough to remain strong until old age\u00bb are fundamentally different figures. The norm of 0.83 g\/kg is based on nitrogen balance: how much is needed for the body not to break down its own muscles. This is the lower limit for survival, not the functional optimum.<\/p>\n\n\n\n

The current body of evidence suggests otherwise. For a healthy, active adult who wants to maintain muscle mass, double that is needed. For people over 65, it\u2019s even higher. Most Ukrainians don\u2019t reach this benchmark, not even suspecting it.<\/p>\n\n\n\n

0.83 versus 1.6: what \u00abenough\u00bb really means\u00bb<\/h2>\n\n\n\n

The rupture begins with what the norm is calibrated to.<\/p>\n\n\n\n

The EFSA has based its findings on classic nitrogen balance studies. We measure how much nitrogen is ingested through food and how much is excreted in urine. We identify the point where the balance is zero \u2014 and this represents the average requirement, 0.66 g\/kg. We add a margin for variability \u2014 resulting in 0.83 g\/kg for 97.51% of adults. The logic is clear.<\/p>\n\n\n\n

The problem is that a zero nitrogen balance is a state in which the body does not lose<\/strong> muscles. He says nothing about the ability to build, recover from exertion, synthesise enough enzymes and antibodies, or compensate for age-related losses.<\/p>\n\n\n\n

In 2018, in British Journal of Sports Medicine<\/em> Morton and colleagues' meta-analysis has been published. It covered 49 studies and 1863 participants. The researchers measured how Protein intake<\/strong> related to the increase of dry muscle mass in strength-trained individuals. A breakpoint was found: 1.6 g\/kg per day. Beyond this threshold, additional protein ceased to provide noticeable muscle growth.<\/p>\n\n\n\n

So, doubling the official norm is the threshold from which the optimum begins for an active person.<\/p>\n\n\n\n

Later works using the indicator amino acid oxidation (IAAO) method provide further clarification. For individuals with strength training experience, the optimum shifts even higher \u2013 to 1.7\u20132.2 g\/kg. In some subgroups, it can be up to 2.4 g\/kg. A meta-analysis from 2022 in Sports Medicine \u2013 Open<\/em> confirms a dose-dependent relationship between total protein and strength gain.<\/p>\n\n\n\n

What does this mean for a person weighing 75 kg? The official protein intake is about 62g of protein per day. The functional optimum for training is 120g. These are not two levels of \u00abnormal\u00bb; it's the difference between \u00abyou won't die\u00bb and \u00abyou will develop\u00bb.<\/p>\n\n\n\n

Why do we need more, not less, with age<\/h2>\n\n\n\n

The common notion that one should have \u00abless\u00bb protein with age is a diagnostic error. The reality is the opposite: optimal protein intake doesn't fall with years, but rather increases.<\/p>\n\n\n\n

Muscle loss begins gradually from the age of 30. After 60, the rate accelerates \u2014 3\u20138% per decade. This is partly genetic and partly due to a decline in physical activity. But there is another factor: Anabolic resistance<\/strong>. Older muscles react less well to the same dose of protein as in younger years. The \u00absynthesise muscle\u00bb signal, which the amino acid leucine triggers via mTOR, requires a higher dose in the elderly to switch on at all.<\/p>\n\n\n\n

In 2013, the PROT-AGE working group of the European Geriatric Medicine Society issued a position statement. Healthy individuals over 65 years of age require a minimum of 1.0\u20131.2 g\/kg per day. Those who are ill or recovering need 1.2\u20131.5 g\/kg. In 2014, ESPEN confirmed these figures in a separate position article.<\/p>\n\n\n\n

A separate problem is daily distribution. In young people, muscle protein synthesis is triggered by 20\u201325 g of quality protein per meal. In older adults, around 30 g is needed for the same response. This is approximately 2.8 g of leucine per meal.<\/p>\n\n\n\n

A 70-year-old who eats 20g of protein for breakfast (a portion of cheese on toast) receives a suboptimal stimulus. The daily total might seem normal. The problem is the distribution.<\/p>\n\n\n\n

In the Ukrainian context, this is particularly painful. For older people, breakfast is often porridge with a little milk. Lunch is soup and a piece of bread. The main portion of protein falls to dinner. In total for the day, it can be 60\u201370g, but none of the meals cross the anabolic response threshold. The body receives a boost for synthesis zero times a day instead of three to four.<\/p>\n\n\n\n

Shop as a carbohydrate showcase<\/h2>\n\n\n\n

Now let\u2019s talk about the external environment. If you take a critical look at your nearest supermarket, a pattern emerges. 80% of the visible range consists of carbohydrates. Bread, pastries, biscuits, sweets, crisps, fizzy drinks, noodles, cereals. Adequate protein intake won\u2019t happen by itself in such conditions.<\/p>\n\n\n\n

Protein products \u2013 meat, fish, eggs, cheese, dairy \u2013 take up less space, are often at the end of the aisle, and cost more per calorie. It\u2019s not a conspiracy, it\u2019s economics. Carbohydrates are cheaper to produce, last longer, and are easier to package into convenient forms.<\/p>\n\n\n\n

Shelves with protein bars and shakes have appeared. This is a positive trend, but you need to read the ingredients. A typical 50g \u00abprotein\u00bb bar can contain 8-12g of protein and 20-25g of carbohydrates. Of these, 15g+ are sugars in various forms: glucose syrup, fructose, maltodextrin.<\/p>\n\n\n\n

The name \u00abprotein\u00bb doesn't mean it's a protein source. It means there's more protein than in regular chocolate of the same size. In terms of protein-to-calorie ratio, many bars are closer to a dessert than to muscle fuel.<\/p>\n\n\n\n

This doesn't mean that bars should be thrown away. The \u00abbuy a bar - cover your protein\u00bb framework doesn't work well. Protein should still be counted from main meals - meat, fish, eggs, dairy, legumes. And supplements should be treated as a convenient way to add 20-25g of quality protein where it's difficult to organise main meals.<\/p>\n\n\n\n

Personal experience: how I discovered a protein intake deficit in myself<\/h2>\n\n\n\n

When I got more serious about my training, I did my own research into scientific publications on nutrition. The conclusion that struck me was this: the vast majority of us humans are systematically under-eating protein.<\/p>\n\n\n\n

If we look honestly, what surrounds us in shop windows is mostly carbohydrates: baked goods, sweets, noodles, ready-made snacks. Yes, recently protein bars have appeared in Ukraine too, but you need to look carefully at the ingredients. Often there is no less sugar than protein.<\/p>\n\n\n\n

I reviewed my menu and increased the proportion of protein food. But even so, when I started counting, it turned out that I was still not reaching my daily target. I consistently had a deficit of 30\u201340 g.<\/p>\n\n\n\n

That's when I started using powdered protein supplements. Whey isolate as a fast-acting form post-workout and for separate servings. Micellar casein as a slow-release form, which fuels with amino acids for longer periods between main meals.<\/p>\n\n\n\n

One separate observation surprised me the most. When you more or less stick to a balanced diet, you don't crave sweets and all the \u00abchemicals\u00bb as much as before. There's no need to train willpower, no need to forbid yourself anything. The craving simply weakens on its own. I wasn't expecting this effect. But it's precisely this effect that makes such a diet stable in the long term.<\/p>\n\n\n\n

Sufficient protein intake turns off sugar cravings<\/h2>\n\n\n\n

This personal effect is well-supported in the literature. Research by Heather Lady and her colleagues at the University of Missouri has repeatedly shown that a diet higher in protein reduces subjective feelings of hunger, cravings for snacks, and the number of high-calorie episodes in the evening.<\/p>\n\n\n\n

Weigl\u2019s landmark 2005 study of overweight adults demonstrated a clear effect. When the proportion of protein in the diet was increased from 15% to 30% of total calorie intake, participants consumed 441 kcal less per day without consciously restricting their intake.<\/p>\n\n\n\n

There are three mechanisms at work. Firstly, protein stimulates the satiety hormones PYY and GLP-1 more effectively. Secondly, it has a higher thermic effect\u2014the body expends up to 20\u201330 calories simply on digesting it. For carbohydrates, this figure is 5\u201310%. Thirdly, a more stable glucose level after consuming protein means fewer \u00abcrashes\u00bb after 2 hours \u2014 it is these crashes that trigger the impulsive urge for \u00absomething sweet\u00bb.<\/p>\n\n\n\n

A protein framework for the day: what sufficient protein intake looks like<\/h2>\n\n\n\n

There isn't a single correct menu \u2013 there's a logic. Four to five meals, with 25\u201340g of protein in each, evenly distributed. For people under 50, the lower end of the range is practical. After 50, it's better to be closer to the upper end.<\/p>\n\n\n\n

What gives how much protein (rounded):<\/p>\n\n\n\n