For a while it was thought that there were only 20 amino acids, and many websites still reflect this today, but in fact, a couple of more rare aminos were discovered making a total of 22 amino acids. But how many amino acids are there really? 

The real question is how many amino acids exist beyond the 22 we know of SO FAR, and what about other types of amino acids? The reality is that amino acids, which are the basic building blocks of the body, are in abundance within the body. They are sources of energy such as carbohydrates and fats, except that amino acids contain nitrogen (N); because of this they play a role in forming muscles, tissues, organs, skin, and even hair.

Amino acids act as the precursors to neurotransmitters in the brain and enzymes that help with things like digestion. Amino acids are essential for health, and basically regulate the body’s metabolic processes. There are hormones that are made up of amino acids, antibodies too, so they affect the immune system. Plus they transport oxygen and nutrients in the body.

How Many Kinds of Amino Acids are there?

Different amino acids have different functions. How many amino acids, types, or kinds that exist depend on whether they are:

Essential
Non-essential
Semi-essential

How Many Essential Amino Acids Are There?

How many amino acids are “essential” (meaning you must get them from food)? They are listed as: arginine, histidine, leucine, isoleucine, lysine, methionine, phenylalanine, threonine, tryptophan, valine.

How Many Amino Acids are Non-Essential

How many amino acids are “non-essential” (meaning your body makes them)? These are listed as: alanine, asparagine, aspartate, cysteine, glutamate, glutamine, glycine, proline, serine, tyrosine.

However, how many amino acids from one of the above groups are actually conditional or “semi-essential” amino acids? These are: arginine, cysteine, glycine, glutamine, proline, serine, tyrosine.

There are 22 Amino Acids

These above are the 20 more well-known amino acids; however, just how many amino acids exist actually are counted as being over 200 in numbers, but the 22 proteinogenic amino acids are the ones that are commonly known.

These more commonly known aminos can be found in food (all meat such as beef, pork, chicken, seafood, and even eggs are excellent sources of all 22 amino acids). They can also be bought as amino acid supplements individually or as a complex of many in balanced forms for their health benefits.

How many amino acids have you had in your diet today?

Reference:

http://aminoacidstudies.org/#sthash.51ThyP74.dpuf

http://www.nutriology.com/aaessnoness.html