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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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…ludes riboflavin in the homocysteine discussion because it supplies the precursor for FAD, a cofactor used by MTHFR. This gives vitamin B2 a specific place in the pathway rather than treating every B vitamin as interchangeable. Putting the …

Nutrient referenceSep 23, 2026
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…can involve skin, digestive and neurological symptoms. How supplementation is approached Identify whether the product contains nicotinic acid, niacinamide or another form before discussing B3. Dr. Purser’s course specifically prepares patie…

Nutrient referenceSep 23, 2026
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Supports amino-acid metabolism, neurotransmitter production and hemoglobin synthesis. Also called: Vitamin B6 (Pyridoxine), Pyridoxine A connection between amino acids and brain chemistry B6 helps with chemical messengers and the pathway fr…

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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Supports proteins involved in blood clotting and bone metabolism. Also called: Vitamin K1 (Phylloquinone), Phylloquinone What it does Supports proteins involved in blood clotting and bone metabolism. Possible deficiency symptoms Deficiency …

Nutrient referenceSep 23, 2026
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…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. Review your eye health and any current eye-health formula before adding it…

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…

Learning essentialsSep 23, 2026
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…low amino acids may raise questions about protein intake or absorption; antioxidant findings may lead to other questions. A flagged result starts a conversation. It does not explain your symptoms by itself. Putting the pieces together Your …

Report teachingSep 16, 2026
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…athways. Understand the connection Folate, or vitamin B9, supports DNA building blocks, cell division, and the remethylation of homocysteine to methionine. A severe deficiency can affect blood-cell production and other body systems. Follo…

Report teachingSep 16, 2026
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…ebotomy. Understand the connection HFE helps regulate iron absorption. H63D, identified as rs1799945, is different from C282Y and from many other HFE variants. Follow the pathway Dr. Purser distinguishes a genetic susceptibility from meas…

Report teachingSep 16, 2026
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…mitters, and the reaction also produces hydrogen peroxide. Follow the pathway Dr. Purser discusses MAOA rs1137070, rs2072743, and rs6323 alongside MAOB rs1799836 and rs2283729. He connects monoamine processing with riboflavin-dependent FAD…

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