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

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

Arginine

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…e 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, meat, d…

Nutrient referenceSep 23, 2026

Asparagine

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…e 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, meat, d…

Nutrient referenceSep 23, 2026

Astragalus

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…APA result. A cell-response finding is not a diagnosis of a deficiency in this botanical or compound. Astragalus root preparations differ from combination immune-support products. What symptoms can—and cannot—tell you There is no establish…

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

Chromium

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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 Meat, whole grains and some vegetables; amounts v…

Nutrient referenceSep 23, 2026

Cysteine

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…e 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, meat, d…

Nutrient referenceSep 23, 2026

Ginkgo Biloba

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…APA result. A cell-response finding is not a diagnosis of a deficiency in this botanical or compound. Ginkgo extracts differ from mixed memory-support formulas. Review all ingredients and current medicines before use. What symptoms can—and…

Nutrient referenceSep 23, 2026

L-Glutamine

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…e 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, meat, d…

Nutrient referenceSep 23, 2026

Glycine

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…e 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, meat, d…

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