Water soluble vitamins
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Overview of Water-Soluble Vitamins: Vitamin C and B-Complex
Water-soluble vitamins include vitamin C and the B-complex group (thiamin, riboflavin, niacin, pantothenic acid, pyridoxine, biotin, folate, and cobalamin) 1245+3 MORE. These vitamins dissolve in water, are not stored in the body, and excess amounts are excreted in urine, making daily intake essential 23410.
Functions and Importance in the Body
Water-soluble vitamins are crucial for many bodily functions. B-complex vitamins are involved in energy production, redox reactions, growth, tissue repair, nervous system function, and red blood cell formation 1245+1 MORE. Vitamin C acts as an antioxidant and is important for immune function, tissue repair, and the prevention of scurvy, a disease marked by bleeding and poor wound healing 1247. Deficiencies in these vitamins can lead to a range of health problems, including neurological, hematological, and immune-related symptoms 78.
Dietary Sources and Absorption
B-complex vitamins are found in a variety of foods such as cereal grains, meat, poultry, eggs, fish, milk, legumes, and fresh vegetables, while citrus fruits are rich in vitamin C 345. The body cannot synthesize most water-soluble vitamins (except for some niacin and those produced by gut microbiota), so they must be obtained from the diet 58. Absorption occurs in the intestine through specific carrier-mediated processes, and factors like intestinal disease, malabsorption, or certain medications can interfere with this process, increasing the risk of deficiency 58.
Stability and Loss During Food Preparation
Water-soluble vitamins are easily destroyed or lost during food storage and preparation, especially through washing, cooking, or exposure to light and air 23. This makes it important to handle foods carefully to preserve their vitamin content 23.
Special Considerations: Pediatric and Clinical Populations
Children, especially infants and young children, are at higher risk for deficiencies due to rapid growth and variable dietary intake . In chronic kidney disease (CKD), patients may require supplementation of water-soluble vitamins to compensate for increased losses during dialysis and to support overall health, but excessive supplementation can sometimes cause mild toxicity or worsen certain health conditions .
Conclusion
Water-soluble vitamins, including vitamin C and the B-complex group, are essential for health and must be consumed regularly through a varied diet. They play key roles in metabolism, growth, and immune function, but are easily lost from the body and from foods during preparation. Special attention is needed for vulnerable groups such as children and individuals with certain health conditions to ensure adequate intake and prevent both deficiency and excess.
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Most relevant research papers on this topic
Water-Soluble Vitamins
Water-soluble vitamins, such as B-complex and vitamin C, must be replaced daily and are easily destroyed during food storage and preparation.
Water-soluble vitamins
This review highlights the need for improved methods for determining water-soluble vitamins in pharmaceutical preparations, fortified powdered drinks, and food samples, and highlighting the need for more sensitive and selective methods for determining vitamin B5.
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