THE PURSER WELLNESS ENCYCLOPEDIA

Let’s explore “Sjögren’s syndrome and immune signaling”

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Nutrient referenceSep 23, 2026

NADH

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…uced form of a coenzyme involved in cellular energy reactions. Also called: NADH What it does The reduced form of a coenzyme involved in cellular energy reactions. How supplementation is approached NADH belongs to cellular-energy chemistry,…

Nutrient referenceSep 23, 2026

Vanadium

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A trace element without an established essential dietary role in humans. Also called: Vanadium What it does A trace element without an established essential dietary role in humans. How supplementation is approached Dr. Purser’s course place…

Nutrient referenceSep 23, 2026

Vitamin D

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Helps calcium absorption and bone mineralization. Also called: Vitamin D A nutrient level and a receptor gene answer different questions Dr. Purser places vitamin D in immune, hormone and bone-related teaching. The conversion-genetics chapt…

Nutrient referenceSep 23, 2026

Zeaxanthin

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A carotenoid found in foods and in the retina. Also called: Zeaxanthin What it does A carotenoid found in foods and in the retina. How supplementation is approached Zeaxanthin is a plant pigment found in the eye and often paired with lutein…

Gene referenceSep 23, 2026

AOC1

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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. Also called: DAO, Amine Oxidase, Copper Containing 1, Diami…

Gene referenceSep 23, 2026

COL5A1

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COL5A1 encodes one component of type V collagen, which helps organize collagen fibers. It connects to the strength and structure of tendons, skin and other connective tissues. Also called: Collagen Type V Alpha 1 Chain Collagen structure, t…

Gene referenceSep 23, 2026

DAOA

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The older Purser genetics reference uses the heading “DAOA (AOC1)” in its gut section. Also called: D-Amino Acid Oxidase Activator Two similar names, two different pathways You may see DAOA and AOC1 written together in older materials, but …

Gene referenceSep 23, 2026

GAD1

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GAD1 helps your body make GABA, a chemical messenger, from glutamate. Also called: Glutamate Decarboxylase 1 The glutamate-to-GABA connection Dr. Purser’s course uses GAD/GABA teaching to explain a connection between excitatory and inhibito…

Gene referenceSep 23, 2026

HRH2

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HRH2 is the gene name for Histamine Receptor H2. Learn what a specific result could mean and what to ask about it. Also called: Histamine Receptor H2 Histamine also connects to stomach acid Dr. Purser’s genetics reference connects HRH2 with…

Gene referenceSep 23, 2026

CD40LG

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CD40LG encodes CD40 ligand, which binds CD40 and supports communication needed for effective antibody responses. It is on the X chromosome, which changes how some genetic results must be interpreted. Also called: The ligand that helps acti…

Gene referenceSep 23, 2026

RAD50

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RAD50 encodes a DNA-repair protein. The surrounding genomic region also contains regulatory elements relevant to the nearby IL4, IL5 and IL13 cluster, so a locus association can concern more than the coding function of one gene. Also called…

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