THE PURSER WELLNESS LIBRARY

Let’s explore Understanding a nutrient deficiency

A COURSE FOR YOUR CURIOSITYGetting to know your micronutrients

5 chapters, at your pace

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389 discoveries for your curiosity50 matching listings grouped; alternative sources stay available.

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Nutrient referenceSep 17, 2026

Camu Camu

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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 Camu camu fruit and fruit powder. Other vitamin C…

Nutrient referenceSep 17, 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 17, 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 17, 2026

Chlorophyll

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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 Spinach, kale, parsley and other green vegetables…

Nutrient referenceSep 17, 2026

Choline

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…cetylcholine and transport of fats from the liver. Possible deficiency symptoms Inadequate choline can cause liver or muscle damage in deficiency studies; nonspecific symptoms do not diagnose it. Food sources Eggs; liver; fish; soybeans; po…

Nutrient referenceSep 17, 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 17, 2026

Copper

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…ndling, connective tissue and antioxidant enzymes. Possible deficiency symptoms Deficiency may cause anemia, low white blood cells and neurological problems. Food sources Shellfish; nuts; seeds; organ meats; whole grains. Supplement forms C…

Nutrient referenceSep 17, 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 17, 2026

Echinacea

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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 Usually encountered as a botanical preparation ra…

Nutrient referenceSep 17, 2026

Elderberry

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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 Properly cooked elderberries in foods; raw or unr…

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