Vitamins are organic substances found in food; people and animals need them in order to maintain life functions or prevent disease. About 15 different vitamin groups are necessary for the nutritional needs of humans. Only minute amounts are required to...

Vitamins and Minerals Groups of nutrients that the human body needs in order to remain healthy and function normally. Vitamins are organic substances, small amounts of which are needed for certain biochemical reactions in the human body. Minerals are...

Apart from their actual health benefits, vitamins have played an important role in the American consciousness as the arena for a struggle between competing systems of knowledge: the positivist authority of "normal science" with its...

Vitamins are organic compounds found in foods that are necessary in human and animal diets to sustain life and health. There are thirteen vitamins that have been identified as necessary for human health, and several other vitamin-like substances also...

Vitamins are organic components in food that are needed in very small amounts for growth and for maintaining good health. The vitamins include vitamin D, vitamin E, vitamin A, and vitamin K, or the fat-soluble vitamins, and folate (folic acid), vitamin...

Vitamins are organic molecules that are needed in small amounts in the diet. They are frequently molecules that bind in the active site of an enzyme and thereby alter its structure in a way that permits it to react more readily. Vitamins serve nearly...

Vitamins are organic compounds that the human body needs in order to function properly and maintain overall good health. Of the 13 compounds currently classified as vitamins, almost all are acquired from dietary sources. A small number,...

Vitamins are organic substances that are required in small amounts for normal functioning of the body. Lack of adequate quantities of vitamins results in well-known deficiency diseases, such as scurvy from Vitamin C deficiency and rickets from Vitamin...

A vitamin is a nutrient that is an organic compound required in tiny amounts for essential metabolic reactions in a living organism.[1] Most vitamins cannot be obtained in sufficient quantities by synthesis in the body, and therefore must be obtained...