Let’s explore “Environmental exposure, inflammation, and transsulfuration questions”

An enzyme the body makes that breaks down hydrogen peroxide.

The genetic-architecture chapter explains that S-adenosylmethionine (SAM) donates methyl groups and becomes S-adenosylhomocysteine (SAH).

Encodes diamine oxidase, an enzyme involved in breaking down histamine and other amines. DAO is used here as an enzyme nickname; it is also the official symbol of a different gene.

BHMT helps recycle homocysteine into methionine using betaine. It is a different route from the folate and B12 pathway.

CHDH helps convert choline toward betaine, a nutrient involved in the homocysteine pathway.

Makes an enzyme that helps break down catechol compounds, including some neurotransmitters. A common variant does not by itself explain mood, attention or stress tolerance.

The older Purser genetics reference uses the heading “DAOA (AOC1)” in its gut section.

Encodes an enzyme involved in fatty-acid metabolism.

Encodes an enzyme involved in fatty-acid metabolism.

FOLH1 helps break down folate from food so it can be absorbed. This is different from the MTHFR step.

GAD1 helps your body make GABA, a chemical messenger, from glutamate.

GAD2 helps make GABA, a chemical messenger, from glutamate.