Effects of Vitamin D Supplementation on Nonspecific Musculoskeletal Pain, Quality of Life, Self-Related Health and Sexual Satisfaction: A Randomized Control Trial

Abstract

Non-specific musculoskeletal pains (CNMP) are common problem with unknown etiology which has become a major concern because of their negative impact on health. The aim of the present study was to investigate the effect of vitamin D supplementation on pain scores, quality of life, self-rated health and sexual satisfaction among CNMP patients with vitamin D deficiency. In this clinical trial study, sixty-six patients (18-50 years in both sex) with CNMP and vitamin D deficiency were randomly assigned to consume 50000 IU vitamin D, once every week for 8 weeks in the intervention group or placebo in the control condition. Clinical examination, pain scores, quality of life (QoL), self-rated health and sexual satisfaction were measured at the beginning and at the end of study. Patients in the vitamin D group had a significant pain relief after 8 weeks compared to the placebo group (p=0.04 vs. p= 0.42). Also, they had increased QoL scores and sexual satisfaction compared with placebo (p <0.0001 and p=0.01, respectively). We observed a significant effect on improvement of quality of life, sexual satisfaction and pain in patients with CNMP after administration of therapeutic doses of vitamin D. Such findings could be considered to implement informative interventional programs to control CNMP complications and develop practical policies to improve the diet quality among CNMP patients. Further studies are needed to determine whether vitamin D supplementation lead to significant modifications in CNMP complications with consideration of confounding factors in different population.