White spots on the skin often create worry, especially when they appear suddenly or seem to brighten under sunlight. These small patches can feel alarming because they interrupt the familiar look of your skin. In many cases the cause is harmless and temporary. Still, it is understandable to wonder why they formed and what the body might be trying to signal. One possible explanation involves nutrition, because the skin depends on a steady supply of vitamins and minerals to maintain color and overall balance.