To further this point, ironically in the Middle East (like the Persian Gulf specifically) the sun is so strong even locals do not spend so much time outside with direct contact with sunlight. Everyone, and I mean everyone here, is told by medical professionals Vitamin D deficiency is so widespread causes weird problems. We have to give our child Vitamin D supplements daily, and doctors tell me we could give him horse-pill like supplement regiments; the only place in the world where this is so strongly encouraged.
So, the rest of you, just go outside.