Minerals

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These are inorganic nutrients that do not provide energy, but are vital for many functions in the body. The body itself cannot produce them and must therefore receive them through food. One speaks therefore of essential, thus vital minerals.

These are also quite robust. They are not sensitive to heat, light or oxygen - unlike some vitamins.

At vitaminexpress.org, for example, you can find a variety of mineral supplements that can help with a deficiency.