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Vitamin B 12 deficiency can be determined, but not always. [14] This means it measures forms of vitamin B 12 that are "active" and can be used by the body, as well as the "inactive" forms, which cannot. [151] Vitamin B 12 deficiency can be found within normal levels, so clinical symptoms should be taken into account when a diagnosis is made. [2]
The predominant cause of nutritional optic neuropathy is thought to be deficiency of B-complex vitamins, particularly thiamine [2] (vitamin B 1), cyanocobalamin (vitamin B 12) and recently copper. [3] Deficiency of pyridoxine (vitamin B 6), niacin (vitamin B 3), riboflavin (vitamin B 2), and/or folic acid also seems to play a role. Those ...
Injection of hydroxycobalamin is often used if digestive absorption is impaired, [2] but this course of action may not be necessary with high-dose oral supplements (such as 0.5–1.0 mg or more), [94] [95] because with large quantities of the vitamin taken orally, even the 1% to 5% of free crystalline B 12 that is absorbed along the entire ...
Vision changes and change of mental state may also be present. Bilateral spastic paresis may develop and pressure, vibration, and touch sense are diminished. A positive Babinski sign may be seen. [7] Prolonged deficiency of vitamin B 12 leads to irreversible nervous system damage.
Common, most foods do not contain vitamin D, indicating that a deficiency will occur unless people get sunlight exposure or eat manufactured foods purposely fortified with vitamin D. Vitamin D deficiency is a known cause of rickets, and has been linked to numerous other health problems. [46] [47] Vitamin E deficiency
[4]: 44 Vitamin B 12 is an essential water-soluble vitamin, the deficiency of which creates anemia (macrocytic anemia), decreased bone marrow cell production (anemia, pancytopenia), neurological problems, as well as metabolic issues (methylmalonyl-CoA acidosis). [4]: 50–51 Vitamin B 12 is therefore an important vitamin for the body to absorb.
Many observational studies and clinical trials have linked several vitamins with the pathological process of diabetes; these vitamins include folate, [77] thiamine, [71] β-carotene, and vitamin E, [83] C, [87] B12, [88] and D. [89] Vitamin D: insufficiency is common in diabetics. [89]
[119] [120] As for the classic deficiency of vitamin B12, it would affect up to 40% of the population, its prevalence has not yet been studied in autism spectrum disorders. Vitamin B12 deficiency is one of the most serious. [121] Vitamin B9 (folic acid): Studies have been conducted regarding folic acid supplementation in autism in children ...
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