It sounds like a contradiction. Dubai has sunshine almost every day of the year, and vitamin D deficiency is nonetheless widespread across the UAE population.
The reason is not the sun. It is how little of it most of us actually meet.
Why it happens here
Vitamin D is made in the skin on exposure to UVB. Between the summer heat, air-conditioned buildings, covered parking and indoor work, many residents spend the productive daylight hours entirely out of the sun — and quite reasonably so, given the temperatures.
Several other factors compound it: darker skin needs longer exposure to make the same amount, sunscreen blocks the wavelength involved, and clothing that covers the skin — worn for cultural or practical reasons — reduces exposure further.
What deficiency actually feels like
The symptoms are unhelpfully vague, which is why it is diagnosed by testing rather than by suspicion.
- Persistent tiredness
- Aching muscles and bones, particularly the lower back
- Low mood
- Frequent minor infections
- Hair shedding
Testing and treatment
A single blood test measures it. Where a deficiency is found, treatment is a course of supplementation at a dose set by how low the level is, followed by a repeat test to confirm it has corrected.
The dose matters. Very high doses taken without monitoring are not harmless, and over-the-counter guesswork is a poor substitute for a level and a plan.
Keeping it corrected
Short, regular sun exposure outside the hottest hours helps where it is practical. Diet contributes modestly — oily fish, eggs, fortified products. For most people here, maintenance supplementation at an appropriate dose is the realistic answer, with periodic retesting.
Common questions
How do I know if I am vitamin D deficient?
A single blood test measures your level. The symptoms — tiredness, aching, low mood — overlap with several other conditions, so testing is what distinguishes them.
How much vitamin D should I take?
That depends on your measured level, which is why a test comes first. Correction doses differ from maintenance doses, and very high doses without monitoring are not harmless.
Can I fix it with sunlight alone in Dubai?
For some people, short regular exposure outside peak heat is enough to maintain a level. For many here it is not practical for much of the year, which is why supplementation with periodic retesting is the common approach.
This article is general health information, not medical advice, and does not replace a consultation. Care at Smart Care Polyclinic is provided by DHA-licensed clinicians.