Evidence supporting the use of: Vitamin D
For the health condition: Fibromyalgia Syndrome

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Synopsis

Source of validity: Scientific
Rating (out of 5): 2

Vitamin D has been investigated for its potential role in supporting or treating Fibromyalgia Syndrome (FMS), primarily because vitamin D deficiency is common in the general population and some symptoms of deficiency—such as musculoskeletal pain, fatigue, and mood disorders—overlap with those of fibromyalgia. Observational studies have reported a higher prevalence of vitamin D deficiency in patients with FMS compared to controls. Some small interventional trials suggest that vitamin D supplementation may lead to modest improvements in pain and quality of life in vitamin D-deficient fibromyalgia patients. For example, a 2014 randomized controlled trial (Rashid et al., Pain Medicine) found that vitamin D supplementation reduced pain scores in deficient individuals with FMS. However, other trials have failed to find significant benefits, and systematic reviews have generally concluded that the evidence is weak and inconsistent. Current clinical guidelines do not recommend vitamin D supplementation specifically for FMS unless a deficiency is documented.

In summary, while there is some scientific rationale and preliminary evidence supporting the use of vitamin D in FMS—particularly in those who are deficient—the overall quality of evidence is low. The benefit appears limited to correction of deficiency rather than a direct treatment effect on fibromyalgia itself. Therefore, vitamin D is not considered a first-line therapy for FMS, but screening for and correcting deficiency may be reasonable as part of comprehensive care.

More about vitamin D
More about Fibromyalgia Syndrome

Other health conditions supported by vitamin D

Allergies (food)
Alzheimer's Disease
Amenorrhea
Anorexia
Apathy
Arrhythmia
Arthritis
Autism
Autoimmune Disorders
Backache
Birth Defects (prevention)
Body Building
Broken Bones
Calcium Deficiency
Cancer (natural therapy for)
Cancer (prevention)
Cancer Treatment (reducing side effects)
Celiac Disease
Chronic Obstructive Pulmonary Disorder
Colds (antiviral)
Colds (general)
Colds (prevention)
Colds (with fever)
Concentration (poor)
Concussions
Confusion
Congestive Heart Failure
Contagious Diseases
Convalescence
Convulsions
Cramps (menstrual)
Cramps and Spasms
Crohn's Disease
Cystic Breast Disease
Cystic Fibrosis
Dandruff
Debility
Dementia
Depression
Dermatitis
Diabetes
Diabetic Retinopathy
Erectile Dysfunction
Estrogen (low)
Fibroids (uterine)
Fibromyalgia Syndrome
Fibrosis
Grave's Disease
Grief and Sadness
Hair (loss or thinning)
Hair Care (general)
Hashimoto's Disease
Headache (cluster)
Heart (weakness)
Hypertension
Hypothyroid
Infection
Infection (bacterial)
Infection (viral)
Infertility
Inflammation
Inflammatory Bowel Disorders
Influenza
Injuries
Irritable Bowel Syndrome
Itching
Knees (weak)
Leaky Gut Syndrome
Leprosy
Lesions
Leukemia
Lou Gehrig's Disease
Lupus
Lymphoma
Melanoma
Memory and Brain Function
Menopause
Menstrual Irregularity
Mental Illness
Metabolic Syndrome
Migraine
Miscarriage (prevention)
Mood Swings
Multiple Sclerosis
Muscle Tone (lack of)
Muscular Dystrophy
Myasthenia Gravis
Nephritis
Nerve Damage
Nervous Exhaustion
Numbness
Nursing
Obsessive Compulsive Disorder
Oral Surgery
Osteoporosis
Pain (general remedies for)
Pancreatitis
Paralysis
Parkinson's Disease
Peripheral Neuropathy
PMS (general)
PMS Type D
PMS Type H
PMS Type P
PMS Type S
Pneumonia
Polyps
Post Partum Depression
Post Partum Weakness
Pregnancy (herbs and supplements for)
Progesterone (low)
Prostatitis
Psoriasis
Rheumatoid Arthritis
Schizophrenia
Sciatica
Seasonal Affective Disorder
Senility
Acne
Allergies (respiratory)
Arteriosclerosis
Asthma
Anemia
Cardiovascular Disease
Fatigue
Tuberculosis