THE PURSER WELLNESS ENCYCLOPEDIA

Let’s explore “MTHFR, homocysteine, and immune signals”

Explore this topic as a step-by-step interactive map.MTHFR, the citric acid cycle & ATP
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Nutrient referenceSep 23, 2026

Astragalus

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…ound. Astragalus root preparations differ from combination immune-support products. What symptoms can—and cannot—tell you There is no established dietary deficiency syndrome for this specific botanical or compound. Symptoms are not evidenc…

Nutrient referenceSep 23, 2026

Maitake

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…aten as food differ from concentrated mushroom extracts and immune-support blends. What symptoms can—and cannot—tell you There is no established dietary deficiency syndrome for this specific botanical or compound. Symptoms are not evidence …

Nutrient referenceSep 23, 2026

Vitamin D

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…e answer different questions Dr. Purser places vitamin D in immune, hormone and bone-related teaching. The conversion-genetics chapter includes VDR, which concerns the vitamin D receptor. This is distinct from measuring a vitamin D blood le…

Gene referenceSep 23, 2026

HLA-DQA1

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…the pieces together Dr. Purser includes this pathway in the immune and gut discussion. Some HLA-DQ combinations are relevant to celiac susceptibility, but a marker such as rs2187668 does not establish active celiac disease. Symptoms, approp…

Gene referenceSep 23, 2026

MAOB

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… called: MAO-B, Monoamine Oxidase B Breaking down monoamine signals MAOB encodes monoamine oxidase B, an enzyme involved in breaking down monoamine compounds, including dopamine. It does not simply build dopamine, and a DNA marker is not a …

Gene referenceSep 23, 2026

VDR

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…w. Putting the pieces together Dr. Purser connects VDR with immune regulation and vitamin D/K2 support. Match supplementation to measured 25-hydroxyvitamin D, calcium, kidney context and the current product list. High-dose vitamin D should …

Gene referenceSep 17, 2026

C3

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…. How this gene connects You may see C3 discussed alongside Immune regulation, Inflammation, Omega/fatty-acid metabolism. These are topics to explore, not a diagnosis or a measurement of how the pathway works in your body. Understanding a r…

Gene referenceSep 17, 2026

CCR3

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…e connects You may see CCR3 discussed alongside Gut health, Immune balance, Mucosal integrity, Omega/fatty-acid metabolism, Inflammation. These are topics to explore, not a diagnosis or a measurement of how the pathway works in your body. U…

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