Q&A

Amino acids in general

What Are Amino Acids?

Amino acids are nutrients which represent the source of life.
Proteins which constitute the body are made up of 20 kinds of amino acids.

Where does the name derive from?

It was named amino acid as a generic term referring to substances having both an amino group and a carboxyl (carboxylic acid) group within their structures.

What roles do amino acids serve?

Amino acids play active roles in a wide variety of fields such as the taste of food, sports, medical care, beauty care, and health care.

What happens if amino acids run short?

If amino acids run short, this may lead to growth failure.
However, amino acids do not run short as long as you have a normal diet.

Don't we get overweight when taking too much amino acids?

Amino acids have the same calorie value as glucose at 4 kcal/g.
However, since just a small amount of amino acids is taken from amino acid supplements, it is usually impossible to get overweight due to excessive intake of amino acids.

How to take amino acids

Is it true that the more amino acids you take the better it is for you?

Amino acids taken in excess are broken down and excreted from the body.
However, excessive intake of any nutrients, including amino acids, becomes a burden on the body.

Are amino acids taken from food insufficient?

Amino acids are sufficient as long as you have a normal diet. However, if you have an unbalanced diet or are on excessive one, amino acids may become deficient or lose their balance. When you do strenuous exercise, specific amino acids are consumed as energy. So it is very effective to replenish amino acids on such an occasion.

What's the best diet to ensure a good amino acid balance?

In order to have well-balanced diet of essential amino acids, it is advisable to eat variety of foods including bread, cerial or rice, fruit and vegetables, meat, poultly or fish, dairy products, etc. in well-balanced proportions.

What is the difference between intakes from food and from supplements?

Proteins take a long time to be digested and absorbed since they are first degraded to amino acids in the intestinal tract and then are absorbed into the body. In contrast, amino acids are absorbed faster than proteins because they are directly absorbed. The function of amino acids after absorption is not different between intake from food and from tablets or drinks.

Roles of amino acids

I've heard that sports athletes take amino acids. What effects do they have?

Amino acids constitute myoproteins and serve as an energy source during exercise. Therefore, sports athletes worldwide use amino acids for the purposes of nutrition and recovery from fatigue. Amino acids are absorbed faster than proteins, so they can easily be replenished during sports.

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Can we become muscular by taking amino acids?

Amino acids enhance the effect of exercise and serve as the materials for muscles, so weight lifters and other athletes take advantage of them. However, just taking amino acids without exercise will not increase your muscles readily.

Does a dope test check sports athletes for amino acids?

Since amino acids are originally contained in the body, they pose no problems in a dope test.

Is it true that amino acids turn the skin and hair moist?

Natural moisturizing factors (NMF), contained originally in the skin, prevent damage by dryness and irritants. More than half of these NMFs is made up of amino acids and their derivatives.
Amino acids are important components for moisturizing the skin. They are also related to the moisture of hair.
According to data, use of shampoos/treatment agents containing some kinds of amino acids improves moisturizing capacity and makes combing smoother.

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Shampoos and other products are often labeled with "combined with amino acids". Do amino acids help remove dirt?

Amino acid-based cleansing ingredients are manufactured by combining amino acids with dirt-removing agents. It is possible to produce weakly acidic (similar to the skin) cleansing ingredients.

I've heard that some amino acids are used as medical products. Is that true?

Amino acids perform various functions in the body. Some amino acids are found to be pharmaceutically effective for diseases and are used as medical products.
Some amino acids are also utilized as pharmaceutical intermediates.

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Is it true that the ingredients of drip infusions are amino acids?

Drip infusions do not always contain amino acids. However, amino acids are included as indispensable components in high calorie infusions (Hyperalimentation) for post-operative patients unable to take sufficient nourishment orally.

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