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Deficiency isn't common, but can produce some scary side effects when it does happen. Lack of vitamin B12 can cause megaloblastic anemia—a condition characterized by larger than normal red blood ...
[15] [16] [17] A mild deficiency may not cause any discernible symptoms, but at levels moderately lower than normal, a range of symptoms such as feeling tired, weak, lightheadedness, headaches, dizziness, rapid breathing, rapid heartbeat, cold hands and feet, low-grade fevers, tremor, cold intolerance, easy bruising and bleeding, pale skin, low ...
First, have your health care provider run blood tests to see if you truly have a B12 deficiency. If you do, the only way to treat it is to consume more B12, either through food, supplements or ...
[6] [15] [26] Vitamin B 12 deficiency can also cause symptoms of mania and psychosis. [27] [28] Among other problems, weakened immunity, reduced fertility and interruption of blood circulation in women may occur. [29] The main type of vitamin B12 deficiency anemia is pernicious anemia, [30] characterized by a triad of symptoms:
Pernicious anemia is the most common cause of clinically evident vitamin B 12 deficiency worldwide. [14] Pernicious anemia due to autoimmune problems occurs in about one per 1000 people in the US. Among those over the age of 60, about 2% have the condition. [ 8 ]
Everyone requires a certain amount of B12 depending on their age, starting with .5 mcg per day for infants up to 2.4 mcg for teens and adults and even more—2.6 mcg and 2.8 mcg, respectively, for ...
Hydrocortisones and valproic acid are also two drugs that can cause moderate bleeding from the gut. Amoxicillin and phenytoin have the ability to cause a vitamin B12 deficiency. [citation needed] Other common causes are thyroid disorders, lead toxicity, infectious diseases (e.g. malaria), alcoholism, and vitamin E deficiency. [citation needed]
Rather, the question should be “Does B12 deficiency cause weight gain” as some evidence suggests low levels of B12 may be linked to weight gain and obesity.