<unk>  is a lack of the dietary<unk> s, the micronutrients that are needed for an organism's proper health. The cause may be a poor diet, impaired uptake of the<unk> s that are consumed, or a dysfunction in the organism's use of the<unk>  after it is absorbed. These deficiencies can result in many disorders including anemia and goitre. Examples of<unk>  include, zinc deficiency, iron deficiency, and magnesium deficiency.
Mineral deficiency
Vitamin D deficiency
Boron deficiency 
Vitamin deficiency
Disorders of calcium metabolism
Endocrine bone disease
Fluorine deficiency
Chromium deficiency