Vitamins and minerals in human nutrition
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Essential Role of Vitamins and Minerals in Human Nutrition
Vitamins and minerals are essential micronutrients required in small amounts for the human body to function properly. They are crucial for metabolism, immune function, growth, and the prevention of chronic diseases, even though they are needed in much smaller quantities than macronutrients like carbohydrates, proteins, and fats Godswill2020Arif2024Youssef2024.
Classification and Functions of Vitamins and Minerals
Vitamins: Water-Soluble and Fat-Soluble
There are 13 essential vitamins: 9 water-soluble (including 8 B vitamins and vitamin C) and 4 fat-soluble (A, D, E, and K). Water-soluble vitamins are not stored in the body and need to be consumed regularly, while fat-soluble vitamins can accumulate, sometimes leading to toxicity if consumed in excess Godswill2020Youssef2024Wijaya2015. Vitamins act as coenzymes in metabolic processes, support immune function, and help maintain healthy skin, vision, and bones Youssef2024Goldstein2018.
Minerals: Macrominerals and Trace Elements
Minerals are inorganic elements divided into macrominerals (needed in larger amounts, such as calcium, phosphorus, potassium, sodium, and magnesium) and trace elements (needed in smaller amounts, such as iron, zinc, selenium, copper, and iodine) Godswill2020Arif2024Gupta2014. These minerals are vital for bone health, nerve signaling, enzyme function, and maintaining fluid balance Quintaes2015Razzaque2025.
Health Benefits and Deficiency Diseases
Micronutrients are essential because the body cannot synthesize them in sufficient amounts, so they must be obtained from the diet. Deficiencies can lead to a range of health problems, such as anemia (iron deficiency), osteoporosis (calcium or vitamin D deficiency), scurvy (vitamin C deficiency), and impaired immune function (zinc or selenium deficiency) Godswill2020Youssef2024Razzaque2025. Conversely, excessive intake of certain vitamins and minerals can also cause health issues, such as hypervitaminosis or mineral toxicity Godswill2020Razzaque2025.
Antioxidant Properties and Disease Prevention
Some vitamins (C, E, and A) and minerals (such as zinc and selenium) have antioxidant properties, helping to protect the body from damage caused by reactive oxygen species. These antioxidants play a role in reducing the risk of chronic diseases and maintaining cellular health Requirements2005Godswill2020.
Dietary Sources and Supplementation
Vitamins and minerals are found in a wide variety of foods. Plant-based foods are rich in many vitamins and minerals, while animal products provide others, such as vitamin B12 and heme iron Gupta2014Wijaya2015. While supplements can help prevent deficiencies, especially in at-risk populations, a balanced diet with diverse foods is the best way to meet nutritional needs and prevent chronic disease Ati-Hellal2021Quintaes2015Gupta2014.
Conclusion
Vitamins and minerals are indispensable for human health, supporting a wide range of physiological functions. Both deficiencies and excesses can have serious health consequences. Consuming a balanced diet rich in a variety of foods is the most effective way to ensure adequate intake of these essential micronutrients and maintain optimal health Godswill2020Youssef2024Quintaes2015+1 MORE.
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