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| Vitamins are organic substances that neither supply energy nor contribute to body mass. Vitamins serve crucial functions in almost all bodily processes. Vitamins must be obtained from food or dietary supplementation.
Vitamins are synthesized by plants and also found in animals that produce them from precursor substances known as provitamins. There are 13 known vitamins classified as either water soluble or lipid soluble. The lipid-soluble vitamins are vitamins A, D, E, and K; vitamins C and the B-complex vitamins are water soluble. Excess lipid-soluble vitamins accumulate in the tissues an can increase to toxic concentrations. Except in relatively rare and specific instances, excess water-soluble vitamins are generally nontoxic and are eventually excreted in the urine. Their maximum potency for the body occurs within a 8-14 hour period. Vitamins regulate metabolism, facilitate energy release, and are important in the process of bone and tissue synthesis. Research generally shows that vitamin supplementation (above that obtained in a well balanced diet) is not related to improved exercise performance or the potential for training. In fact, serious illness can result from consuming a regular excess of lipid-soluble and, in some instances, water soluble vitamins.
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Email: yourpersonaltrainer@ic24.net
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