THE PURSER WELLNESS ENCYCLOPEDIA

Let’s explore “MTHFD1 & one-carbon metabolism”

A RELATED COURSEWeight & metabolism through the years

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Nutrient referenceSep 23, 2026

L-Tryptophan

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…ntake or a laboratory finding is not automatically a standalone deficiency diagnosis. Assess overall protein intake, absorption and the clinical setting with a qualified clinician. Food sources Protein foods such as eggs, fish, poultry, mea…

Nutrient referenceSep 23, 2026

L-Tyrosine

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…ched Tyrosine participates in catecholamine and thyroid-hormone synthesis. Dr. Purser’s treatment approach first reviews the whole amino-acid pattern, dietary protein, absorption and demand. An isolated product is not automatically preferre…

Nutrient referenceSep 23, 2026

Vanadium

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… your clinician start a CMA replenishment plan, you may add one new product at a time, often waiting 3–7 days to see how you feel. A check-in is usually planned near ten weeks during an approximately 100-day period. Follow your written plan…

Nutrient referenceSep 23, 2026

Vitamin A

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…nversion can be part of the discussion, but a gene result alone does not choose the form or amount. Food sources Eggs; dairy; liver; orange and dark-green vegetables containing provitamin A carotenoids. Supplement forms Retinyl palmitate, r…

Nutrient referenceSep 23, 2026

Vitamin D

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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

Zeaxanthin

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… your clinician start a CMA replenishment plan, you may add one new product at a time, often waiting 3–7 days to see how you feel. A check-in is usually planned near ten weeks during an approximately 100-day period. Follow your written plan…

Nutrient referenceSep 23, 2026

Zinc

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…ogether with copper Zinc connects with immune function, hormones, copper handling and antioxidant enzymes. A plan for zinc should also account for other minerals and your actual results. Putting the pieces together Dr. Purser’s mineral teac…

Gene referenceSep 23, 2026

CBS

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… into the pathway that supplies building blocks for glutathione. Also called: Cystathionine Beta-Synthase From homocysteine toward glutathione Dr. Purser places CBS in the sulfur-handling pathway that connects homocysteine with glutathione …

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