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Vitamin deficiency is the condition of a long-term lack of a vitamin. When caused by not enough vitamin intake it is classified as a primary deficiency, whereas when due to an underlying disorder such as malabsorption it is called a secondary deficiency. An underlying disorder can have 2 main causes:
Vitamin poisoning is the condition of overly high storage levels of vitamins, which can lead to toxic symptoms. The medical names of the different conditions are derived from the vitamin involved: an excess of vitamin A, for example, is called "hypervitaminosis A". Iron overload disorders are diseases caused by the overaccumulation of iron in ...
Scurvy was not only a disease of seafarers. The early colonists of Australia suffered greatly because of the lack of fresh fruit and vegetables in the winter. There the disease was called Spring fever or Spring disease and was described as an often fatal condition associated with skin lesions, bleeding gums, and lethargy. It was eventually ...
Vitamin D deficiency, especially in early life, is linked to an increased risk of autoimmune conditions, such as type 1 diabetes. Autoimmune diseases can be caused by a failure of T cells, a type ...
Worldwide, deficiencies in iodine, Vitamin A, and iron are the most common. Children and pregnant women in low-income countries are at especially high risk for micronutrient deficiencies. [27] [51] Anemia is most commonly caused by iron deficiency, but can also result from other micronutrient deficiencies and diseases. This condition can have ...
Vitamin B12 deficiency symptoms . Vitamin B12 deficiency has a few hallmark symptoms, according to doctors: Lack of energy. Mental fatigue. Nausea, vomiting, or diarrhea. Lack of appetite. Weight loss
Mapping of several bone diseases onto levels of vitamin D (calcidiol) in the blood [6] Normal bone vs. osteoporosis. Vitamin D deficiency is typically diagnosed by measuring the concentration of the 25-hydroxyvitamin D in the blood, which is the most accurate measure of stores of vitamin D in the body.
Measles can cause vitamin A deficiency in some people, but experts say supplementation only eases that condition and doesn’t treat other symptoms. ... Measles can deplete the body’s stores of ...