Do We Need Amino Acids for Muscle Growth and Recovery?

Wondering what your body really needs to build and maintain muscle? The answer is amino acids. Let us explain why.

3 MIN READ — 04/08/2025

Wondering what your body really needs to build and maintain muscle? The answer is amino acids. These small but mighty building blocks are essential for your body’s functions and come in many different forms. Here’s why they’re so important and how they can help you reach your fitness goals.

What Are Amino Acids and Why Are They Important for Your Body?

Amino acids, also known as aminocarbonic acids, are the building blocks of the proteins that are so crucial for our bodies. Made up of carbon, hydrogen, oxygen, and nitrogen, there are 20 different types that our bodies rely on to synthesize proteins. Virtually all biological processes—such as metabolism regulation or the formation of skin and muscle structures—depend on them.

EAAs: The Difference Between Essential and Non-Essential Amino Acids

There’s a simple but important distinction between essential and non-essential amino acids. Essential amino acids (EAAs) cannot be produced by our bodies and must be obtained through our diet, while non-essential amino acids can be synthesised internally. This distinction is crucial for our nutrition. We need to consume essential amino acids through food to ensure vital body functions, such as muscle growth, run smoothly. To fully support our body’s biological processes, we need both types.

The Benefits of Amino Acids for Your Health

Amino acids offer a host of benefits for our health. They help build and repair muscles and support our immune system by contributing to the production of immune cells. They also play a key role in energy supply, giving us the stamina and performance needed for daily activities. Moreover, they serve as building blocks for hormone and enzyme production.

How Amino Acids Contribute to Healthy Ageing

If you’re into sports and looking to build muscle, amino acids are especially relevant for you—without them, muscle tissue growth simply isn’t possible. It’s crucial to ensure your body is well-supplied. The group of branched-chain amino acids (BCAAs) is particularly important here, including leucine, isoleucine, and valine. These amino acids support protein synthesis in the body, enabling muscle mass growth.

Amino Acids and Their Impact on Metabolism

Amino acids are involved in numerous metabolic processes, making them vital for our body’s overall function. In addition to protein biosynthesis, they’re key players in energy production and metabolic regulation. Did you know that amino acids also help detoxify the body? Without them, we wouldn’t be able to maintain a positive nitrogen balance. So, if you want to support a healthy metabolism, amino acids are a must.

The Role of Amino Acids in Post-Workout Recovery

Can amino acids help prevent muscle soreness? In short: yes. Because amino acids play a role in muscle repair and growth, they’re crucial for recovery. This is especially true after intense workouts and long sessions, where muscle structures are often heavily stressed and partially damaged. These structures need to be rebuilt. Amino acids can also help reduce inflammatory responses in the body, making them a valuable tool for preventing muscle soreness.

How Amino Acids Contribute to Healthy Ageing

As we age, it becomes increasingly important to counteract muscle loss—and amino acids can help. Ensuring your body gets enough key building blocks like leucine is crucial for maintaining muscle protein synthesis as you age. Amino acids can also help prevent metabolic disorders. It’s important to focus on foods rich in amino acids and consider supplements like amino acid complexes.

Natural Sources of Essential Amino Acids

Many foods provide amino acids and should be a staple in your diet:

These foods contain amino acids
These foods contain amino acids

Amino Acids as a Key Factor in Protein Quality

The Digestible Indispensable Amino Acid Score (DIAAS) is an amino acid index that helps you evaluate the quality of proteins in food and is considered the gold standard for assessing amino acids in products. Introduced by the World Health Organization (WHO), the DIAAS provides an accurate assessment of protein quality, allowing you to optimise your diet effectively. The index assesses each essential amino acid and its digestibility, determining how well these amino acids are available and usable by the body.

At a Glance

  • 01.

    Amino acids are the building blocks of proteins and are essential for numerous biological processes, such as muscle growth, metabolism regulation, and immune functions. There are essential (cannot be produced by the body) and non-essential amino acids.

  • 02.

    In particular, branched-chain amino acids (BCAAs) like leucine, isoleucine, and valine promote protein synthesis and help with muscle building.

  • 03.

    Amino acids can be found in many foods, such as meat, fish, eggs, and grains.

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º Food Supplement. In combination with a healthy diet and exercise.

ª Survey on the awareness of multi-nutrient powders with 211 consumers aged 18 to 49 in Germany, 09/24.

↡ Survey of 527 AG1 customers after 12+ days of use, 2024. The survey was conducted on a previous version of AG1’s continually evolving formulation. The survey results can be transferred to the current version of the formula due to no or scientifically negligible changes in supporting nutrients. Vitamins C, B6, B12, riboflavin, niacin, pantothenic acid, and folate help reduce tiredness and fatigue. Pantothenic acid supports mental performance. Calcium supports normal digestive enzyme function, while biotin maintains normal mucous membranes, such as the gut lining.

Immune System

1: With vitamins A, C, B6 and B12 as well as folate, zinc, copper and selenium, AG1 contributes to the normal function of the immune system. Vitamin C contributes to maintain the normal function of the immune system during and after intense physical exercise.

Energy; Metabolism

2: Vitamins C, B6, B12, riboflavin, niacin, pantothenic acid and magnesium contribute to normal energy-yielding metabolism and to the reduction of tiredness and fatigue. With vitamins C, B6, B12, as well as thiamine, riboflavin, niacin, biotin, pantothenic acid, calcium, phosphorus, copper and manganese, AG1 contributes to normal energy-yielding metabolism. Magnesium contributes to electrolyte balance. Biotin, zinc and chromium contribute to normal macronutrient metabolism.

Cell Protection

3: With vitamins E and C as well as riboflavin, zinc, copper and selenium, AG1 contributes to the protection of cells from oxidative stress. Phosphorus contributes to normal function of cell membranes. Folate, Vitamin B6 and B12 contribute to normal homocysteine metabolism.

Mental Performance; Psychological Function; Nervous System

4: With pantothenic acid, AG1 contributes to normal mental performance. Zinc contributes to normal cognitive function. With vitamins C, B6, B12, B1, B3 and B7 AG1 contributes to normal psychological function and to normal functioning of the nervous system. Calcium contributes to normal neurotransmission.

Skin, Hair & Nails

5: With vitamins A, as well as riboflavin, niacin, biotin and zinc, AG1 contributes to the maintenance of normal skin. Vitamin C contributes to normal collagen formation for the normal function of skin. Vitamin B7, zinc and selenium contribute to the maintenance of normal hair. Zinc and selenium contribute to the maintenance of normal nails.

Hormonal System

6: With vitamin B6, AG1 contributes to the regulation of hormonal activity. Zinc contributes to the maintenance of normal testosterone levels in the blood. Selenium contributes to the normal thyroid function. With chromium, AG1 contributes to the maintenance of normal blood glucose levels.

Digestion

7: Calcium contributes to the normal function of digestive enzymes. Biotin AG1 contributes to the maintenance of normal mucous membranes (e.g. intestinal mucosa).

Muscles

8: With calcium and magnesium, AG1 contributes to normal muscle function.