THE PURSER WELLNESS ENCYCLOPEDIA

Let’s explore “Vitamin A”

A RELATED COURSEGetting to know your micronutrients

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Health BlogMar 13, 2026

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

In the article

…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

In the article

…ical or compound. Andrographis is an herbal extract, not a vitamin. Extract strength and other ingredients vary. What symptoms can—and cannot—tell you There is no established dietary deficiency syndrome for this specific botanical or compo…

Nutrient referenceSep 23, 2026

Astaxanthin

In the article

…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

In the article

…r or skin change with another cause. Your B-complex or multivitamin may already contain biotin. Check the full ingredient list before adding another product. Food sources Cooked eggs; nuts; seeds; fish; meats. Supplement forms Biotin (vitam…

Nutrient referenceSep 23, 2026

Calcium

In the article

…rser’s plan, his course separates its schedule from morning vitamin D and places calcium at bedtime. This is a clinic scheduling approach, not a claim that the two nutrients cannot be absorbed together. Food sources Milk; yogurt; calcium-se…

Nutrient referenceSep 23, 2026

Iron

In the article

…rces Meat; seafood; lentils; beans; iron-fortified cereals. Vitamin C helps absorption of plant iron. Supplement forms Ferrous sulfate, fumarate and bisglycinate are examples. Compare elemental iron on the label. A question to bring to your…

Nutrient referenceSep 23, 2026

Lithium

In the article

…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…

Nutrient referenceSep 23, 2026

Lutein

In the article

…on is approached Lutein is an eye-related carotenoid, not a vitamin with a recognized isolated deficiency syndrome. Place any proposed product in the context of the eye diagnosis, diet and the complete eye-health formula. The general redox …

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