THE PURSER WELLNESS ENCYCLOPEDIA

Let’s explore “Vitamin B9 / folate deficiency”

Explore this topic as a step-by-step interactive map.MTHFR, the citric acid cycle & ATP
A RELATED COURSEGetting to know your micronutrients

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FacebookApr 16, 2023

Vitamins are essential micronutrients that play crucial roles in numerous physiological processes within cells,…

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Vitamins are essential micronutrients that play crucial roles in numerous physiological processes within cells, including energy production, cell growth and repair, immune function, and antioxidant protection. When there is a deficiency of …

FacebookApr 7, 2020

IN THE NEXT 4-8 WEEKS AMERICA WILL GO BACK TO WORK. ARE YOU READY? ARE YOU PROTECTED?

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IN THE NEXT 4-8 WEEKS AMERICA WILL GO BACK TO WORK. ARE YOU READY? ARE YOU PROTECTED? 1. Take Vitamin C — Up to 200-1,000mg/day. (Hard to take too much but possible.) 2. Load up on Vitamin D3 — 5,000 units a day. (Yes you can take too muc

Health BlogMar 13, 2026

The Hidden Molecule Driving Inflammation: Understanding the Purser Model of Homocysteine

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…e in the blood. Doctors were taught that lowering it with B-vitamins might reduce heart disease risk. But research results were inconsistent, leaving many physicians unsure whether homocysteine truly mattered. New research and clinical obse…

Nutrient referenceSep 23, 2026

Andrographis

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…APA result. A cell-response finding is not a diagnosis of a deficiency in this botanical or compound. Andrographis is an herbal extract, not a vitamin. Extract strength and other ingredients vary. What symptoms can—and cannot—tell you Ther…

Nutrient referenceSep 23, 2026

Astaxanthin

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…hed Astaxanthin is an antioxidant pigment, not an essential vitamin. If you are considering a product, ask what you hope to improve and how it fits with your other results. A low antioxidant-response finding does not tell you an astaxanthin…

Nutrient referenceSep 23, 2026

Biotin

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…zymes process fats, carbohydrates and amino acids. Possible deficiency symptoms Rare deficiency may cause hair thinning, rash and neurological symptoms. Hair loss alone does not establish deficiency. How supplementation is approached Start …

Nutrient referenceSep 23, 2026

Calcium

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…and teeth and supports muscle and nerve signaling. Possible deficiency symptoms Long-term low intake can affect bones without obvious symptoms. Low blood calcium has multiple causes and is not equivalent to low dietary intake. How supplemen…

Nutrient referenceSep 23, 2026

Iron

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…those measurements. The plan must distinguish low intake or deficiency from overload concerns. How supplementation is approached Dr. Purser treats iron as a finding requiring laboratory and clinical context, not a general fatigue supplement…

Nutrient referenceSep 23, 2026

Lithium

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…ntation is approached Lithium is different from an ordinary vitamin. A low-dose supplement is not the same as prescription lithium. If you are considering either form, talk with the clinician who manages your medicines and kidney or thyroid…

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