THE PURSER WELLNESS ENCYCLOPEDIA

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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

Catalase

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…riad. They have different jobs in the body. Homocysteine or immune-signal questions may bring these pathways into your visit, but a pathway connection does not show that you need all three products. How supplementation is approached Dr. Pur…

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

L-Serine

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…ocesses. Also called: Serine An amino acid with two pathway connections Serine connects with both sulfur handling and folate chemistry. It comes up when discussing the route from homocysteine toward cysteine and the SHMT1 step that involves…

Nutrient referenceSep 23, 2026

Taurine

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…ody chemistry. Also called: Taurine Bile and nervous-system connections Taurine comes up in discussions of bile, nerves, muscles, and the heart. If several amino acids are low, your clinician may also consider your diet, absorption, and ove…

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

HDC

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…learance and the HRH1/HRH2 receptors that receive histamine signals. Putting the pieces together The reference discusses dietary patterns and clinician-selected antihistamine approaches in this section. These are different mechanisms, not a…

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…

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