Vitamin D Deficiency

A person sitting tired indoors near a window with minimal sunlight

Vitamin D deficiency occurs when the body doesn't get enough vitamin D from sunlight, food, or supplements. This vital nutrient helps regulate calcium, supports bone health, boosts immune function, and contributes to energy levels. Deficiency is especially common in older adults, people with limited sun exposure, or those with darker skin tones.

Fatigue or tiredness
Bone or muscle pain
Frequent illnesses or infections
Depression or mood changes
Hair loss
Slow wound healing

Vitamin D supplementation: OTC or prescription-strength doses
Dietary changes: Foods rich in vitamin D like fatty fish, eggs, or fortified milk
Increased sunlight exposure: With appropriate sun safety measures
Addressing underlying causes: Treating absorption or metabolic issues

Inadequate sun exposure
Poor dietary intake
Kidney or liver disorders
Malabsorption (e.g., celiac disease, bariatric surgery)
Use of certain medications (e.g., anticonvulsants)

Healthcare Providers

Causes

Inadequate sun exposure
Poor dietary intake
Kidney or liver disorders
Malabsorption (e.g., celiac disease, bariatric surgery)
Use of certain medications (e.g., anticonvulsants)

Treatments

Vitamin D supplementation: OTC or prescription-strength doses
Dietary changes: Foods rich in vitamin D like fatty fish, eggs, or fortified milk
Increased sunlight exposure: With appropriate sun safety measures
Addressing underlying causes: Treating absorption or metabolic issues

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Vitamin D Deficiency

Healthcare Providers

Symptoms

Causes

Treatments

Specialties That Treat This Condition

Related Conditions

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