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Most vitamins are water-soluble: that is, obviously, that they dissolve in water. Vitamin D, however, is fat soluble. When you intake vitamin D, or it is produced by your deep skin layers, it embeds itself in your fat. If you take too much of a water-soluble vitamin, you will simply urinate out the excess. However, excess vitamin D does not leave the body so easily. It causes all sorts of problems when you get too much of it, such as constipation, dehydration, fatigue, and vomiting (which makes the dehydration even worse).

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15y ago

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