Vitamin D Deficiency: Symptoms, Causes and Treatment
Medically reviewed by Dr. Nikhil Singh, Anaesthesia, MBBS, MD
Last reviewed: 25 Aug 2026 · How we review health content
Vitamin D helps the body absorb calcium and keep bones and muscles healthy. Deficiency is very common, partly because much of our vitamin D comes from sunlight, and it can affect bones, muscles and mood.
Common Symptoms
- Tiredness
- Bone or muscle aches
- Frequent illness
- Low mood
- Hair thinning in some cases
How It Is Corrected
Sensible sun exposure, vitamin D–rich foods and supplements (as advised by a doctor) usually correct a deficiency. A blood test measures your vitamin D level and guides the dose.
Frequently Asked Questions
How do I know if I am vitamin D deficient?
A simple blood test measures your vitamin D level. Symptoms like tiredness and bone or muscle aches can be clues but are not specific.
How much vitamin D should I take?
It depends on your level and needs. A doctor will recommend the right dose; do not take high doses without advice.
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Medical Disclaimer
The information provided in this article is for general informational and educational purposes only. It is not intended as a substitute for professional medical advice, diagnosis, or treatment. Always seek the advice of your physician or other qualified healthcare provider with any questions you may have regarding a medical condition. Never disregard professional medical advice or delay in seeking it because of something you have read in this article.
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A simple blood test measures your vitamin D level. Symptoms like tiredness and bone or muscle aches can be clues but are not specific.
It depends on your level and needs. A doctor will recommend the right dose; do not take high doses without advice.
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Written by Dr. Nikhil Singh
Anaesthesia, MBBS, MD
Last reviewed: 25 August 2026
Medical Disclaimer
The content provided on Zospital is for general informational and educational purposes only. It is not intended as a substitute for professional medical advice, diagnosis, or treatment. Always seek the advice of your physician or other qualified healthcare provider with any questions you may have regarding a medical condition. Never disregard professional medical advice or delay in seeking it because of something you have read on this website. If you think you may have a medical emergency, call your doctor or emergency services immediately.
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