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Nutrient referenceSep 23, 2026
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A botanical used in traditional preparations; it is not a dietary nutrient.

Nutrient referenceSep 23, 2026
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A carotenoid found in foods and in the retina.

Nutrient referenceSep 23, 2026
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Supports enzymes, immune function, wound healing and taste.

Gene referenceSep 23, 2026
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PSEN1 encodes a presenilin protein that participates in gamma-secretase, a protein-processing complex. Some pathogenic variants can cause familial Alzheimer’s disease; a listed common marker is not equivalent to that diagnosis.

Gene referenceSep 23, 2026
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PSEN2 encodes a presenilin protein that participates in gamma-secretase, a protein-processing complex. Some pathogenic variants can cause familial Alzheimer’s disease; a listed common marker is not equivalent to that diagnosis.

Learning essentialsSep 23, 2026
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How Dr. Purser combines inherited tendencies, current nutrient findings and conventional laboratory results without treating them as the same test.

Report teachingSep 16, 2026
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Explore monoamine oxidase, the MAOA and MAOB genes, rs1137070, rs2072743, rs66323, rs1799836, rs2283729, neurotransmitter metabolism, dietary amines, and treatment research.

Report teachingAug 16, 2026
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Explore eotaxin-1, CCR3, eosinophils, allergy, and respiratory and neurological conditions.

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