विवरण
Subgroup analysis of vitamin D levels and fatigue severity by season of blood draw or physical activity level. Seasonal variation and lifestyle factors modify the vitamin D-fatigue relationship.
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![Figure 5: Subgroup analysis of vitamin D levels and fatigue severity by season of blood draw or physical activity level. Seasonal variation and lifestyle factors modify the vitamin D-fatigue relationship.]() > Source: Manuela Pennisi et al. "Decrease in Serum Vitamin D Level of Older Patients with Fatigue.." *Nutrients*, 2019. PMID: [31635199](https://pubmed.ncbi.nlm.nih.gov/31635199/)
<figure> <img src="" alt="Subgroup analysis of vitamin D levels and fatigue severity by season of blood draw or physical activity level. Seasonal variation and lifestyle factors modify the vitamin D-fatigue relationship." /> <figcaption>Figure 5. Subgroup analysis of vitamin D levels and fatigue severity by season of blood draw or physical activity level. Seasonal variation and lifestyle factors modify the vitamin D-fatigue relationship.<br> Source: Manuela Pennisi et al. "Decrease in Serum Vitamin D Level of Older Patients with Fatigue.." <em>Nutrients</em>, 2019. PMID: <a href="https://pubmed.ncbi.nlm.nih.gov/31635199/">31635199</a></figcaption> </figure>