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Vitamins and minerals are considered essential nutrients—because acting in concert, they perform hundreds of roles in the body. They help shore up bones, heal wounds, and bolster your immune system. They also convert food into energy, and repair cellular damage.
Essential nutrients are compounds that the body can't make or can't make in sufficient quantity. According to the World Health Organization , these nutrients must come from food, and they're vital for disease prevention, growth, and good health.
Although vitamins do not provide energy (calories), they are needed for the metabolism of carbohydrates, protein and fat. Vitamins are essential in the diet because most are not synthesized in the body or made up of large quantities. ... Are minerals needed by the body in amounts less than 100 milligrams per day.
