If you have fibromyalgia and a low blood level of vitamin D, taking a D supplement may help reduce symptoms, suggests a new study published in Pain. The study included 30 people with the puzzling disorder, which is characterized by body-wide pain and tender points, often with stiffness, fatigue, sleep problems and other physical and mental symptoms.
The participants, all of whom initially had low vitamin D levels, took either a D supplement or a placebo for 24 weeks.
Compared to the control group, the vitamin D group reported much less pain, improved physical functioning and less morning fatigue. Low vitamin D levels are especially common in people with chronic pain and fibromyalgia, the paper noted.