There was no association between serum ferritin levels and
serum 25(OH)D levels. Vitamin D deficiency increases the
release of pro-inflammatory cytokines such as IL-6 and
TNF-α that may lead to a high MPV [28] and vitamin D
restores immune function and decreases cytokines levels.
However, in the index study authors could not find significant
association between serum vitamin D levels and MPV.