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Nutrient referenceSep 23, 2026
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Supports vision, immune function and tissue development. Also called: Vitamin A What it does Supports vision, immune function and tissue development. Possible deficiency symptoms Deficiency can cause night blindness and eye-surface damage. …

Nutrient referenceSep 23, 2026
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Provides building blocks for NAD and NADP, which participate in cellular energy reactions. Also called: Vitamin B3 (Niacin), Niacin What it does Provides building blocks for NAD and NADP, which participate in cellular energy reactions. Poss…

Nutrient referenceSep 23, 2026
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Supports DNA synthesis and one-carbon metabolism, including the pathway that processes homocysteine. Also called: Vitamin B9 (Folate), Folate, B9, folic acid, methylfolate, 5-MTHF, folinic acid, foods high in folate Different folate forms, …

Nutrient referenceSep 23, 2026
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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
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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…

Nutrient referenceSep 23, 2026
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Supports enzymes, immune function, wound healing and taste. Also called: Zinc Read zinc together with copper Zinc connects with immune function, hormones, copper handling and antioxidant enzymes. A plan for zinc should also account for othe…

Gene referenceSep 23, 2026
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ADIPOQ encodes adiponectin, a hormone released by fat tissue that participates in insulin sensitivity and fat metabolism. Its name often appears in discussions of triglycerides, body composition and metabolic health. Also called: Adiponecti…

Gene referenceSep 23, 2026
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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
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APOE encodes a protein that carries lipids between cells. The familiar APOE e2, e3 and e4 groupings depend on the combination of rs429358 and rs7412, not on either marker read in isolation. Also called: Apolipoprotein E Lipid transport and …

Gene referenceSep 23, 2026
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ATG16L1 is involved in autophagy, a process that helps cells recycle parts. Also called: Autophagy-Related 16-Like 1 Cellular recycling meets gut immunity ATG16L1 is involved in autophagy, a process that helps cells recycle parts. It is stu…

Gene referenceSep 23, 2026
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BHMT helps recycle homocysteine into methionine using betaine. It is a different route from the folate and B12 pathway. Also called: BHMT08, Betaine-Homocysteine S-Methyltransferase Another route through the homocysteine map BHMT is part of…

Gene referenceSep 23, 2026
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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…

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