Methylation
A constant biochemical process that switches reactions on or off by adding a small methyl group to molecules.
Methylation is one of the body's most frequent chemical reactions, involved in making DNA, neurotransmitters, and detoxification. It depends on a steady supply of methyl donors and B vitamins.
Folate, vitamin B12, vitamin B6, and betaine (TMG) all feed the methylation cycle, which is why they are often discussed and supplemented together.