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

Astaxanthin

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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 Salmon, trout, shrimp and other seafood; certain …

Nutrient referenceSep 23, 2026

Açaí Berry

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…APA result. A cell-response finding is not a diagnosis of a deficiency in this botanical or compound. Açaí fruit, juices and concentrated powders differ in fiber, sugar and extract concentration. What symptoms can—and cannot—tell you There…

Nutrient referenceSep 23, 2026

Beta-Carotene

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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 Carrots, sweet potatoes, pumpkin and dark leafy g…

Nutrient referenceSep 23, 2026

Boron

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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 Prunes, raisins, avocados, nuts and legumes. Supp…

Nutrient referenceSep 23, 2026

Calcium

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…and teeth and supports muscle and nerve signaling. Possible deficiency symptoms Long-term low intake can affect bones without obvious symptoms. Low blood calcium has multiple causes and is not equivalent to low dietary intake. How supplemen…

Nutrient referenceSep 23, 2026

Camu Camu

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…APA result. A cell-response finding is not a diagnosis of a deficiency in this botanical or compound. Camu camu powders can contribute vitamin C, but the amount depends on the product. Count any listed vitamin C alongside other sources. Wh…

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