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

MK-4 & MK-7

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…ved in activation of vitamin K-dependent proteins. Possible deficiency symptoms There is no separate symptom checklist that diagnoses an MK-4 or MK-7 deficiency. Food sources Some cheeses and fermented foods; natto is a source of MK-7. Supp…

Nutrient referenceSep 17, 2026

Molybdenum

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…volved in processing sulfites and other compounds. Possible deficiency symptoms Dietary deficiency is extremely rare. Symptoms should not be used to diagnose it. Food sources Legumes; grains; nuts; milk. Supplement forms Sodium molybdate an…

Nutrient referenceSep 17, 2026

NADH

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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 produces and recycles NADH. Food content…

Nutrient referenceSep 17, 2026

Noni Berry

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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 Noni fruit and juice. Supplement forms Juice, pow…

Nutrient referenceSep 17, 2026

Omega-3

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… What symptoms can—and cannot—tell you Essential fatty-acid deficiency is uncommon but can affect skin and other tissues. ALA (omega-3) and linoleic acid (omega-6) must come from the diet. Symptoms or an individual fatty-acid measurement do…

Nutrient referenceSep 17, 2026

Omega-7

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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 Macadamia nuts and sea-buckthorn oil contain palm…

Nutrient referenceSep 17, 2026

Omega-9

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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 Olive oil, avocados and many nuts contain oleic a…

Nutrient referenceSep 17, 2026

L-Phenylalanine

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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

Piperine

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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 Black pepper. Supplement forms Concentrated black…

Nutrient referenceSep 17, 2026

Pomegranate

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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 Pomegranate arils and juice. Supplement forms Who…

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