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Vitamins are organic molecules (or a set of closely related molecules called vitamers) that are essential to an organism in small quantities for proper metabolic function. Essential nutrients cannot be synthesized in the organism in sufficient quantities for survival, and therefore must be obtained through the diet.
Fruits and vegetables are a source of vitamins. A vitamin is a chemical compound that is needed in small amounts for the human body to work correctly. They include Vitamin A, many B vitamins (like B 1, B 2, B 3, B 6, and B 12), Vitamin C, Vitamin D, Vitamin E, and Vitamin K. For example, citrus fruits such as oranges and lemons contain vitamin C.
vitamin, any of several organic substances that are necessary in small quantities for normal health and growth in higher forms of animal life. Vitamins are distinct in several ways from other biologically important compounds such as proteins, carbohydrates, and lipids. Although these latter substances also are indispensable for proper bodily ...
B vitamins are a class of water-soluble vitamins that play important roles in cell metabolism and synthesis of red blood cells. [1] [2] They are a chemically diverse class of compounds. [1] Dietary supplements containing all eight are referred to as a vitamin B complex.
The B vitamin complex (also called B vitamins) are a group of 8 vitamins. They have an important job in the metabolism of cells . Each B vitamin is a cofactor (a coenzyme ) for some key metabolic processes or it is a precursor needed to make one.
Vitamins are essential nutrients that you must obtain through your diet. The two types of vitamins, fat-soluble and water-soluble, are needed for many vital bodily processes, including metabolism, DNA synthesis, and reproduction. They can also help with energy levels and prevent specific health conditions.
They are traditionally separated into two groups: water-soluble vitamins and fat-soluble vitamins. The following table lists the common and chemical names of the essential vitamins, along with their main biological functions and deficiency symptoms.
Vitamin C (also known as ascorbic acid and ascorbate) is a water-soluble vitamin found in citrus and other fruits, berries and vegetables. It is also a generic prescription medication and in some countries is sold as a non-prescription dietary supplement .
Multivitamins are typically available in a variety of formulas based on age and sex, or (as in prenatal vitamins) based on more specific nutritional needs; a multivitamin for men might include less iron, while a multivitamin for seniors might include extra vitamin D.
Pages in category "Vitamins" The following 9 pages are in this category, out of 9 total.