Essential Amino Acids: Why Our Bodies Need the Right Building Blocks
What do muscles, skin, hair, connective tissue, and numerous metabolic processes have in common?
They all depend on proteins—and thus on amino acids.
Proteins are among the most important components of our bodies. They are not only needed to build and maintain muscle tissue, but also form the basis of numerous enzymes, transport proteins, and tissue structures.
However, our bodies cannot produce all the necessary amino acids on their own.
Nine amino acids are considered essential for adults. They must be regularly obtained through our diet.
This raises an interesting question: Does our diet depend solely on how much protein we consume—or does the composition of the amino acids also play a crucial role?
The answer lies in how our bodies produce protein.
What are essential amino acids (EAAs)?
Amino acids are the building blocks of proteins.
When we eat eggs, fish, meat, dairy products, legumes, or other protein-rich foods, the proteins they contain are broken down during digestion into smaller peptides and individual amino acids.
These enter the bloodstream via the intestines and are available to the body for various functions.
Of the 20 proteinogenic amino acids, nine are essential:
| Essential Amino Acid | Biological significance |
| Leucine | Involved in the regulation of muscle protein synthesis |
| Isoleucine | A component of numerous endogenous proteins |
| Valine | A component of muscle and other tissue proteins |
| Lysine | A building block of many structural proteins |
| Methionine | A sulfur-containing amino acid and a precursor to important metabolic compounds |
| Phenylalanine | Precursor of the amino acid tyrosine |
| Threonine | A component of various structural and functional proteins |
| Tryptophan | Precursor of, among other things, serotonin |
| Histidine | A component of proteins and a precursor to histamine |
In addition to these nine essential amino acids, there are conditionally essential amino acids such as arginine. The body can normally produce them on its own, but under certain physiological conditions, the body’s own production may be insufficient.
Good to know: EAA is the English abbreviation for Essential Amino Acids. This refers to the nine essential amino acids that we must regularly obtain through our diet.
Why the ratio of amino acids matters
Imagine you want to bake a cake.
The recipe calls for four eggs, flour, sugar, and butter. You have all the ingredients in sufficient quantities—but instead of four eggs, there’s only one in the fridge.
Can you bake the cake as planned?
No. Even adding extra flour or sugar cannot replace the missing eggs.
A similar principle applies to the body’s production of proteins.
Every protein consists of a specific sequence of amino acids. To produce this protein, the body needs the necessary building blocks in sufficient quantities.
If a necessary amino acid is available only in limited quantities, it can limit protein synthesis.
This principle is known as the limiting amino acid.
Why More Protein Isn’t Necessarily the Whole Answer
Not all dietary proteins have the same amino acid composition. Some protein sources contain particularly high amounts of certain essential amino acids, while others have lower levels of individual amino acids.
Digestibility and the actual amount of amino acids available also influence protein quality.
However, this does not mean that every meal must contain a precisely specified amino acid ratio. The body can utilize amino acids from various foods and through its metabolism.
A varied diet can therefore effectively combine different protein sources.
What matters is the sufficient availability of all necessary amino acids—not just the total amount of protein consumed.
What effects do essential amino acids have in the body?
Essential amino acids do not perform any single, isolated function. Their central importance lies in the fact that they are indispensable for the production of numerous proteins within the body.
1. Muscle Protein Synthesis and Muscle Maintenance
Our muscles are in a constant state of turnover. Muscle proteins are broken down and new proteins are formed. This process is known as protein turnover.
The body requires all the necessary amino acids for muscle protein synthesis.
Leucine, in particular, plays an important role in regulating muscle protein synthesis. It is involved in signaling pathways that control protein synthesis.
However, leucine alone does not provide all the building blocks required for the formation of new muscle proteins. Therefore, an adequate supply of all essential amino acids is important.
2. Skin, Hair, and Connective Tissue
The structures of our skin, hair, and connective tissue also consist largely of proteins.
Keratin, for example, is an important component of hair. Collagen is one of the most important structural proteins in the skin, tendons, and other connective tissues.
Amino acids are required for the body’s own production of these proteins. The amino acid profiles of individual proteins differ significantly from one another.
3. Enzymes and Metabolic Processes
Many enzymes that facilitate biochemical reactions in the body are proteins. Numerous transport proteins and other functional molecules also consist of amino acid chains.
Essential amino acids are therefore not only relevant for visible bodily structures but also for fundamental metabolic functions.
4. Tissue Regeneration and Adaptation to Stress
The human body continuously renews proteins and adapts tissue structures to varying demands. The availability of amino acids is a prerequisite for these normal processes.
It is important to note that the biological function of amino acids does not automatically imply that additional supplementation—when an adequate supply is already present—will provide further health benefits.
EAA or BCAA: What’s the Difference?
BCAAs are among the best-known amino acids in the sports world. The abbreviation stands for branched-chain amino acids.
- Leucine
- Isoleucine
- Valine
These three amino acids are also among the nine essential amino acids. A complete EAA supplement, on the other hand, contains all nine essential amino acids.
The key difference, therefore, lies in the completeness of the available building blocks.
BCAAs can influence certain metabolic and signaling processes. However, the body also needs the remaining essential amino acids to produce complete muscle proteins.
Anyone specifically concerned with amino acid intake should therefore pay attention not only to individual BCAAs but also to the overall composition.
EAAs or Protein Shakes: Which Is Better?
Protein shakes and EAA supplements are often compared. Both provide amino acids, but they differ in their composition and how they are digested.
Protein Shakes
A protein shake typically contains complete dietary proteins, such as whey, soy, or other protein sources. These proteins are broken down into smaller components during digestion.
Protein shakes can be a convenient way to increase your total daily protein intake.
Free Essential Amino Acids
In EAA supplements, the amino acids are already present in free form. Therefore, they do not first need to be released from larger protein molecules through digestion.
After ingestion, they can become available in the bloodstream relatively quickly.
In its 2023 scientific statement, the International Society of Sports Nutrition describes how free essential amino acids can stimulate muscle protein synthesis.
However, this does not mean that every EAA supplement is superior to a high-quality protein shake in every situation.
Key factors include the amount consumed, the amino acid composition, the rest of the diet, and individual circumstances.
Protein shakes and EAA supplements therefore do not have to be mutually exclusive. They serve different nutritional purposes.
Essential Amino Acids After Age 50: Why Muscle Preservation Is Becoming More Important
As we age, our body’s composition changes. Many people lose muscle mass and strength over the years. The extent of this process depends, among other things, on physical activity, diet, health status, and individual factors.
Another important aspect is what’s known as anabolic resistance.
This refers to a reduced response of muscle protein synthesis to certain anabolic stimuli, such as the intake of amino acids.
This does not mean that older adults can no longer produce new muscle proteins. Rather, under certain circumstances, a stronger stimulus may be required to achieve a comparable response.
What do scientific studies recommend?
The European Society for Clinical Nutrition and Metabolism (ESPEN) recommends a daily protein intake of at least 1.0 to 1.2 grams per kilogram of body weight for healthy older adults aged 65 and older.
For a body weight of 70 kilograms, this corresponds to approximately 70 to 84 grams of protein per day.
This recommendation refers to total protein intake from the diet and not to a specific amount of EAA capsules.
Regular physical activity is equally important, particularly strength training within one’s individual capabilities.
And what does this mean for women going through menopause?
During and after menopause, hormonal changes can affect body composition. Maintaining muscle mass therefore becomes even more important during this phase of life.
A protein intake tailored to individual needs, regular exercise, and strength training in particular form the foundation.
Essential amino acids are necessary for muscle protein synthesis. However, whether additional supplementation is advisable depends on how well your dietary intake already meets your needs.
Human Amino Code®: The Idea Behind Daminoc
When proteins consist of specific amino acids in defined ratios, an interesting question arises:
Is it possible to develop an amino acid profile modeled after the composition of human tissue proteins?
Daminoc addresses this very question.
The concept behind the Human Amino Code® is a specifically formulated amino acid profile modeled after human tissue proteins.
Daminoc® 10 PURE EAA HUMAN AMINO CODE® contains nine essential amino acids as well as the conditionally essential amino acid arginine.
What makes this composition unique?
A defined ratio: The ten amino acids contained are not simply combined in equal amounts, but are formulated in a specific ratio according to the Human Amino Code®.
Free-form amino acids: The amino acids are present in free form and do not need to be released from whole food proteins first.
Plant-based raw materials: The amino acids are obtained through fermentation. The product is vegan.
Convenient capsule form: Daminoc 10 PURE EAA can be easily incorporated into your daily routine without having to prepare a protein shake.
Why the distinction is important
The Human Amino Code concept describes a specific composition of amino acids.
However, it is important to distinguish between the theoretical concept and clinically proven additional benefits.
The fact that an amino acid profile was developed based on human tissue proteins does not, in and of itself, prove that it is superior to other complete EAA blends in terms of muscle building, recovery, or other health outcomes.
Such claims would require direct comparative studies using the specific formulation.
Learn more about Daminoc 10 PURE EAA HUMAN AMINO CODE®
When is it best to take EAAs?
Many people wonder about the best time to take them. Should you take essential amino acids in the morning, before a workout, or after?
Scientific research shows that several factors play a role:
- total daily protein intake
- the quantity and quality of the amino acids consumed
- the distribution of protein intake throughout the day
- physical activity and training intensity
- age and individual metabolic status
Free EAAs can become available relatively quickly after ingestion. However, there is no universally optimal time to take them that applies equally to everyone.
Those who already consume sufficient high-quality protein do not necessarily need an additional EAA supplement.
For Daminoc, follow the specific consumption recommendations on the packaging.
What should you look for when buying an EAA supplement?
A high-quality EAA supplement should, above all, have a transparent composition. The following questions can help:
- Does it contain all nine essential amino acids? A complete EAA product should provide all essential amino acids.
- What is the actual amount of amino acids? It’s not just the number of amino acids that matters. The amount provided per serving is also crucial.
- In what ratio are the amino acids present? The composition determines which amino acids are supplied to the body. However, a specific ratio isn’t automatically optimal for every person or every goal.
- In what form are the amino acids present? Free-form amino acids differ from complete dietary proteins in terms of how they are digested.
- Are the source and product information transparent? A clear and transparent label makes it easier to choose and compare different products.
Frequently Asked Questions About Essential Amino Acids
What do essential amino acids do?
Essential amino acids are needed for the body to produce its own proteins. These include, among others, muscle proteins, enzymes, and various structural proteins.
How many essential amino acids are there?
In adults, nine amino acids are considered essential. These include leucine, isoleucine, valine, lysine, methionine, phenylalanine, threonine, tryptophan, and histidine.
Why does Daminoc contain ten amino acids?
Daminoc combines nine essential amino acids with arginine, which is considered conditionally essential. These ten amino acids make up the defined profile of the Human Amino Code®.
Which is better: EAAs or BCAAs?
EAAs contain all nine essential amino acids. BCAAs consist only of leucine, isoleucine, and valine. To produce complete proteins, all necessary amino acids must be available.
Are EAAs better than whey protein?
Not necessarily. EAA supplements provide free essential amino acids, while whey protein is a complete protein. Which option makes more sense depends on dosage, diet, and personal goals.
What role do amino acids play after age 50?
As we age, adequate protein intake becomes increasingly important for maintaining muscle mass. Essential amino acids are necessary building blocks for this. Regular exercise and strength training also remain important.
Do you have to take EAAs every day?
The body needs essential amino acids every day. These can be obtained through regular foods. Additional supplementation isn’t necessary for everyone.
Can EAAs replace a balanced diet?
No. EAA supplements provide selected amino acids, but not all the nutrients found in a balanced diet.
Conclusion: The Right Building Blocks Are Key for Protein Synthesis
Essential amino acids are among the fundamental requirements for the body’s own protein synthesis.
They are necessary for the production of numerous proteins that shape our muscles, tissues, and metabolic processes.
It’s not just about how much protein we consume. The quality of protein sources, the availability of individual amino acids, and overall nutrition also play a role.
With Human Amino Code®, Daminoc addresses a specific aspect of these interrelationships: the targeted composition of ten amino acids modeled after human tissue proteins.
After all, our bodies don’t simply need just any building blocks. For every protein, the right amino acids must be available in sufficient quantities.
Daminoc 10 PURE EAA HUMAN AMINO CODE®
Scientific Sources
Ferrando AA et al. (2023). International Society of Sports Nutrition Position Statement: Effects of Essential Amino Acid Supplementation on Exercise and Performance. Journal of the International Society of Sports Nutrition. https://doi.org/10.1080/15502783.2023.2263409
Deutz NEP et al. (2014). Protein intake and exercise for optimal muscle function with aging: Recommendations from the ESPEN Expert Group. Clinical Nutrition, 33(6), 929–936. https://doi.org/10.1016/j.clnu.2014.04.007
Morton RW et al. (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 in healthy adults. British Journal of Sports Medicine, 52(6), 376–384. https://doi.org/10.1136/bjsports-2017-097608
Bauer J et al. (2013). 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. https://doi.org/10.1016/j.jamda.2013.05.021
