Nutrient deficiency

Nutrient deficiency may refer to:


 * Malnutrition, a condition in animals that results from a diet deficient in calories and/or essential nutrients
 * Micronutrient deficiency, a lack of one or more of the micronutrients required for plant or animal health
 * Avitaminosis, any disease caused by chronic or long-term vitamin deficiency or caused by a defect in metabolic conversion
 * Mineral deficiency, a lack of dietary minerals that are needed for an organism's proper health