THE PURSER WELLNESS ENCYCLOPEDIA

Let’s explore “Understanding a nutrient deficiency”

A RELATED COURSEGetting to know your micronutrients

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595 resources for your curiosity119 matching listings grouped; alternative sources stay available.

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Nutrient referenceSep 23, 2026

Carnitine

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…isorders and certain medical conditions can cause carnitine deficiency. Fatigue alone does not diagnose it, and these disorders require specific clinical evaluation. Food sources Meat, fish and dairy; the body also makes carnitine. Suppleme…

Nutrient referenceSep 23, 2026

Catalase

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…oms can—and cannot—tell you There is no established dietary deficiency syndrome for this specific botanical or compound. Symptoms are not evidence that you need this supplement. Food sources The body makes catalase. Enzyme-containing foods …

Nutrient referenceSep 23, 2026

Chlorophyll

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…APA result. A cell-response finding is not a diagnosis of a deficiency in this botanical or compound. Chlorophyll-containing foods and chlorophyllin supplements are not the same preparation. What symptoms can—and cannot—tell you There is n…

Nutrient referenceSep 23, 2026

Choline

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…rom the liver. Also called: Choline More than a methylation nutrient Dr. Purser connects choline with phosphatidylcholine, membranes, liver fat handling, bile and brain function. PEMT is a major teaching link because it contributes to phosp…

Nutrient referenceSep 23, 2026

Copper

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…uestion to bring to your visit Are we evaluating a measured deficiency, a suspected excess or a handling hypothesis, and what evidence distinguishes them? What to track and reassess Bring all copper- and zinc-containing products to the revi…

Nutrient referenceSep 23, 2026

Echinacea

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…APA result. A cell-response finding is not a diagnosis of a deficiency in this botanical or compound. Echinacea products vary by plant species, plant part and extraction method. What symptoms can—and cannot—tell you There is no established…

Nutrient referenceSep 23, 2026

Elderberry

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…APA result. A cell-response finding is not a diagnosis of a deficiency in this botanical or compound. Elderberry syrups, gummies and extracts can contain additional vitamins or sugar. Compare the whole formula. What symptoms can—and cannot…

Nutrient referenceSep 23, 2026

Frankincense

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…APA result. A cell-response finding is not a diagnosis of a deficiency in this botanical or compound. Frankincense may refer to Boswellia extracts or topical products. An oral extract and a topical preparation serve different purposes. Wha…

Nutrient referenceSep 23, 2026

Goji Berry

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…APA result. A cell-response finding is not a diagnosis of a deficiency in this botanical or compound. Goji berries used as food differ from concentrated extracts and multi-ingredient antioxidant drinks. What symptoms can—and cannot—tell yo…

Nutrient referenceSep 23, 2026

Green Tea

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…APA result. A cell-response finding is not a diagnosis of a deficiency in this botanical or compound. Brewed green tea and concentrated green-tea extracts differ in caffeine and catechin exposure. What symptoms can—and cannot—tell you Ther…

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