Why Protein Supports More Than Just Your Muscles

Most people who are into health and fitness know that protein is vital for building muscle. But proteins play many other important roles in our bodies as well. They are nothing less than the building blocks of life, which makes them crucial for our vitality overall. It’s time to update your knowledge on this essential nutrient.

Table of Contents

What Is Protein?

How does the body create cells, tissues, and muscle fibres? Proteins are crucial building blocks for these various structures. A healthy and balanced diet is impossible without protein. Even antibodies, hormones, and enzymes in our immune system are made of proteins. These proteins are formed from amino acids, some of which our bodies can produce on their own (non-essential amino acids), while others must be obtained from food (essential amino acids). Understanding proteins also means understanding nutrition.

In simple terms, protein, as a macronutrient, is present in nearly every cell in our body. These proteins are made up of long chains of amino acids linked by peptide bonds. The role a protein plays in the body depends on how these amino acid chains are folded. Proteins are more than just building blocks—they support physiological processes such as immune function, cell communication, and metabolic activities.

Why Does Your Body Need Protein?

Proteins are the foundation of all life processes. They are essential for our genetic makeup, aid in various chemical reactions within the body, and provide necessary amino acids. Without protein, the body wouldn’t be able to function properly. It’s vital to give your body what it needs to fulfil these essential tasks. For example, if you're engaging in strength or endurance training, your body will require more protein to build new structures.

How Much Protein Do You Need Per Day?

A healthy, balanced diet includes sufficient protein intake. But what are the recommended amounts? According to the German Nutrition Society (DGE), adults aged 19 to 65 should consume 0.8 grams of protein per kilogram of body weight per day. For those over 65, the recommended intake increases to 1.0 grams per kilogram. If you're unable to reach these amounts through diet alone, supplements may be an option.

Plant vs. Animal Proteins: What’s the Difference?

When consuming protein, it’s important to distinguish between plant and animal sources. Vegan protein can be found in:

  • Grains like rice, spelt, quinoa, oats, and millet
  • Legumes such as beans, lentils, peas, and soy
  • Rapeseed
  • Nuts

This provides a diverse and balanced diet. If you're not strictly vegan, you can also include the following animal protein sources:

  • Game and other meats
  • Tuna and other fish
  • Cheese, milk, yoghurt
  • Eggs

Animal proteins have the advantage of being highly bioavailable, meaning our bodies can absorb and use them more quickly because their amino acids are more similar to ours. However, it's still important to include plant proteins in your diet, as meat can often be high in fats, which may affect your cholesterol levels.

How Much Protein Do Athletes Need?

Many general dietary recommendations are based on average needs. But what about athletes engaged in intense training? Nutrition science suggests higher protein intake for athletes, ranging from 1.2 to 2 grams per kilogram of body weight daily. Additionally, there are specific guidelines on how to spread protein intake throughout the day. It's advisable to divide your intake across three to four meals. Staying hydrated also helps the body process excess protein more effectively. If you're finding it difficult to meet your protein needs, supplements may be a useful option, especially for those who are highly active.

At a Glance

  • 01.

    Proteins play a critical role in building cells, tissues, and muscles, as well as supporting the immune system and various metabolic processes. The body needs proteins to obtain amino acids, some of which must be acquired through diet.

  • 02.

    While animal proteins are absorbed more quickly due to their similarity to our own amino acids, plant-based proteins offer a healthy, low-fat alternative. Both should be part of a balanced diet.

  • 03.

    Athletes require a higher daily protein intake (1.2 to 2 grams per kilogram of body weight) to support muscle building and metabolism. Protein intake should be spread across meals and accompanied by sufficient water intake.

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Immune System

1: Copper, folate, selenium, zinc, and vitamins A, B12, B6, and C contribute to the normal function of the immune system.

Metabolism

2: Vitamins C, B6 and B12, as well as thiamine, riboflavin, niacin, biotin, pantothenic acid, calcium, phosphorus, copper, and manganese contribute to normal energy-yielding metabolism. Biotin, zinc, and chromium contribute to normal macronutrient metabolism. Vitamin A and riboflavin contribute to normal metabolism of iron. Zinc contributes to normal acid-base metabolism.

Healthy Cells

3: Vitamins E and C, as well as riboflavin, zinc, copper, manganese and selenium, contribute to the protection of cells from oxidative stress. Zinc contributes to normal DNA synthesis. Phosphorus contributes to normal function of cell membranes.

Mental Performance; Mental Focus; Nervous System; Psychological Function

4: Vitamins C, B6, B12, riboflavin, niacin, pantothenic acid and folic acid contribute to the reduction of tiredness and fatigue. Pantothenic acid contributes to normal mental performance. Zinc contributes to normal cognitive function. Vitamins C, B6, B12, thiamine, riboflavin, niacin, biotin, and copper contribute to normal functioning of the nervous system. Thiamine, niacin, vitamin B6, vitamin B12, biotin, folate, and vitamin C in AG1 contribute to normal psychological function.

Healthy bones

5: Calcium contributes to the maintenance of normal bones. Protein, phosphorus, zinc, and manganese contribute to the maintenance of normal bones. Vitamin C contributes to normal collagen formation for the normal function of bones.

Cardiovascular System

6: Thiamine contributes to the normal function of the heart. Vitamins B6 and B12 contribute to normal red blood cell formation. Vitamin C contributes to normal collagen formation for the normal function of blood vessels.

Skin, hair, nails

7: Vitamin A, riboflavin, niacin, biotin and zinc contribute to the maintenance of normal skin. Vitamin C contributes to normal collagen formation for the normal function of skin. Biotin, zinc and selenium contribute to the maintenance of normal hair. Copper contributes to normal skin and hair pigmentation and to normal connective tissue. Selenium and zinc contribute to the maintenance of normal nails.

Hormonal Health

8: Vitamin B6 contributes to the regulation of hormonal activity. Pantothenic acid contributes to normal synthesis and metabolism of steroid hormones, vitamin D, and some neurotransmitters. Zinc contributes to the maintenance of normal testosterone levels in the blood. Selenium contributes to normal thyroid function and normal spermatogenesis. Zinc contributes to normal fertility and normal reproduction. Chromium contributes to the maintenance of normal blood glucose levels.

Digestion

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

Muscles

10: Calcium contributes to normal muscle function. Proteins contribute to the maintenance of muscle mass and an increase in muscle mass.

Healthy eyes

11: Vitamin A, riboflavin and zinc contribute to the maintenance of normal vision.