Figure 5

![Figure 5: Supplemental nutrient intake contributions are depicted alongside dietary sources, showing that even with supplement use, many US adults do not achieve adequate levels of key immune health nutrients. Vitamin D deficiency remains widespread regardless of supplementation status.]()

> Source: Carroll A Reider et al. "Inadequacy of Immune Health Nutrients: Intakes in US Adults, the 2005-2016 NHANE." *Nutrients*, 2020. PMID: [32531972](https://pubmed.ncbi.nlm.nih.gov/32531972/)

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  <img src="" alt="Supplemental nutrient intake contributions are depicted alongside dietary sources, showing that even with supplement use, many US adults do not achieve adequate levels of key immune health nutrients. Vitamin D deficiency remains widespread regardless of supplementation status." />
  <figcaption>Figure 5. Supplemental nutrient intake contributions are depicted alongside dietary sources, showing that even with supplement use, many US adults do not achieve adequate levels of key immune health nutrients. Vitamin D deficiency remains widespread regardless of supplementation status.<br>  Source: Carroll A Reider et al. "Inadequacy of Immune Health Nutrients: Intakes in US Adults, the 2005-2016 NHANE." <em>Nutrients</em>, 2020. PMID: <a href="https://pubmed.ncbi.nlm.nih.gov/32531972/">32531972</a></figcaption>
</figure>