Panwar A, et al. - Authors evaluated the prevalence of vitamin D deficiency among chronic low back pain (CLBP) and subacute low back pain (SLBP), and compared the same with healthy controls. Findings suggested a pathogenetic association of the increasing severity of vitamin D deficiency with chronic low back pain and subacute low back pain. A significantly higher prevalence of worse categories of vitamin D deficiency was seen in the CLBP and SLBP cases. In framing of future management guidelines for the above clinical conditions, these results could prove to be of significance.