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Nutrient referenceSep 23, 2026
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An amino acid used in protein synthesis and other metabolic processes. Also called: Tyrosine What it does An amino acid used in protein synthesis and other metabolic processes. How supplementation is approached Tyrosine participates in cate…

Nutrient referenceSep 23, 2026
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An amino acid used in protein synthesis and other metabolic processes. Also called: Valine What it does An amino acid used in protein synthesis and other metabolic processes. How supplementation is approached Valine is a branched-chain esse…

Nutrient referenceSep 23, 2026
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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
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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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…or nerve function, DNA production and healthy red blood cells. Also called: Vitamin B12 (Cobalamin), Cobalamin, B12, cobalamin Transport, use and tolerance Vitamin B12 is involved in the homocysteine pathway with MTR and MTRR. TCN2 helps ca…

Nutrient referenceSep 23, 2026
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Forms enzyme helpers used in energy metabolism. Also called: Vitamin B2 (Riboflavin), Riboflavin The riboflavin–MTHFR connection Chapter 8 includes riboflavin in the homocysteine discussion because it supplies the precursor for FAD, a cofac…

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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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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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 …

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