विटामिन बी १२ की कमी से हाथ सुन्न पड़ जाना। विटामिन बी १२ की कमी के लक्षण और उपचार Vitamin B12 is a nutrient that helps keep the body’s nerve and blood cells healthy and helps make DNA, the genetic material in all cells. Vitamin B12 also helps prevent a type of anemia called megaloblastic anemia that makes people tired and weak.
Two steps are required for the body to absorb vitamin B12 from food. First, hydrochloric acid in the stomach separates vitamin B12 from the protein to which vitamin B12 is attached in food. After this, vitamin B12 combines with a protein made by the stomach called intrinsic factor and is absorbed by the body. Some people have pernicious anemia, a condition in which they cannot make intrinsic factor. As a result, they have trouble absorbing vitamin B12 from all foods and dietary supplements.It is found naturally in a wide variety of animal foods and is added to some fortified foods. Plant foods have no vitamin B12 unless they are fortified. You can get recommended amounts of vitamin B12 by eating a variety of foods including the following:
Beef liver and clams, which are the best sources of vitamin B12.
Fish, meat, poultry, eggs, milk, and other dairy products, which also contain vitamin B12.
Some breakfast cereals, nutritional yeasts and other food products that are fortified with vitamin B12. To find out if vitamin B12 has been added to a food product, check the product labels.
How much vitamin B12 do I need?
शरीर में विटामिन बी १२ की कमी
The amount of vitamin B12 you need each day depends on your age
Vitamin B-12 is important for brain function and the synthesis of red blood cells.
Deficiency of vitamin B-12 can lead to neurological difficulties and anemia.
People over the age of 14 should consume more than 2.4 micrograms (mcg) of vitamin B-12 daily.
Vitamin B-12 is naturally available in meats, but people who do not eat meat, such as vegans, can obtain vitamin B-12 in supplement form.
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