What is L-Serine?

Serine is an amino acid that plays a role in many biosynthetic pathways. It is the main source of the single carbon unit for the methylation reaction that occurs in the production of S-adenosylmethionine.
It is also a precursor to many important amino acids, including cysteine and glycine.
It is considered a non-essential amino acid because it is produced in the body, but we need to consume foods rich in this amino acid to maintain the levels needed for optimal health. It has actually been called a "conditional non-essential amino acid" because in some cases humans are unable to synthesise it in high enough quantities to meet necessary cellular requirements.
Amino acids form our living cells and the antibodies that make up our immune system. They make up proteins that are vital to our survival and are needed to carry oxygen through our bodies.
Serine, in particular, plays an important role in brain function and the health of the central nervous system. One of the many benefits of serine is that it plays a role in forming the phospholipids that are needed in every cell in the body.
It plays a key role in protein synthesis and intracellular metabolism, and is also involved in the function of RNA, DNA, immune function and muscle formation.
Serine is required for the production of tryptophan, an essential amino acid used in the manufacture of serotonin. It is also converted to D-Serine in the cells of the nervous system.
D-serine is known to promote cognitive health. It is the "right-handed isomer of L-Serine," and the two molecules are mirror images of each other.

D-Serine activates NMDA receptors in the brain that act as neurotransmitters. Studies have shown that it can be used as a therapeutic agent for schizophrenia, depression, and cognitive dysfunction.

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