The steel cable of a colliery winding tower. Steel is an alloy of iron and other elements, primarily carbon, that is widely used in construction and other applications because of its high tensile strength and low cost. Steel's base metal is iron, which is able to take on two crystalline forms (allotropic forms), body centered cubic and face centered cubic (FCC), depending on its temperature.
: Appendix B: Vitamin and Mineral Deficiencies in the U.S. Some American adults get too little vitamin D, vitamin E, magnesium, calcium, vitamin A and vitamin C (Table B1). More than 40 percent of adults have dietary intakes of vitamin A, C, D and E, calcium and magnesium below the average requirement for their age and gender. Inadequate intake of vitamins and minerals is most common among 14-to-18-year-old teenagers. Adolescent girls have lower nutrient intake than boys (Berner 2014; Fulgoni 2011). But nutrient deficiencies are rare among younger American children; the exceptions are dietary vitamin D and E, for which intake is low for all Americans, and calcium.
Articles in: Nutritional Deficiencies. Nutritional deficiencies are responsible for many common symptoms and issues, but awareness about their connection must be raised. B12 deficiency, for example â one of the most common deficiencies in the world â can result in brain shrinkage and cognitive decline.utritional Deficiencies. Today, nutritional deficiencies are more common than we think. In 1948, the FDA wrote that 90% of all Americans were deficient in at least one mineral. Today there are many common deficiencies that can be detrimental to optimal health.