Vitamins are natural chemical compounds required in minute quantities for health and normal nutrition in humans. They are divided into two groups, namely, water and fat-soluble vitamins. The former are pro-coenzymes that provide active substances necessary for enzyme synthesis and the latter alter conformation of complex molecules and membranes.
Water-Soluble Vitamins
Vitamin B Group Deficiencies
As the sources of vitamin B are present in more or less the same type of animal and vegetable foods, X and X deficiency of one is likely to be associated with deficiencies of others. Clinical manifestations of B vitamin deficiencies are usually seen in famine situations in developing countries, where there is also the added potential risk of improper preparation of food with long-term storage due to shortage of water and cooking facilities. Unlike fat-soluble vitamins, excess of water-soluble vitamins is not of significant concern.
Thiamine (B1)
Thiamine forms the heat labile portion of the B...
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Suliman, G.I., Nazer, H.M. (2012). Vitamin Deficiencies and Excess. In: Elzouki, A.Y., Harfi, H.A., Nazer, H.M., Stapleton, F.B., Oh, W., Whitley, R.J. (eds) Textbook of Clinical Pediatrics. Springer, Berlin, Heidelberg. https://doi.org/10.1007/978-3-642-02202-9_57
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