Vitamin B 12

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by sara984
Last updated 4 years ago

Discipline:
Health & Fitness
Subject:
Nutrition
Grade:
12

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Vitamin B 12

Sources of this nutreint-Shelfish -Liver - Fish-Red meat -Cheese -Eggs

What vitamin B 12 does to the bodyVitamin B12 does a lot of things for your body. It helps make your DNA and your red blood cells, for examples

Certain conditions that casuse this defiencyAtrophic gastritis, in which your stomach lining has thinned Pernicious anemia, which makes it hard for your body to absorb vitamin B12Surgery that removed part of your stomach or small intestine, including weight loss surgeryConditions affecting the small intestine, such as Crohn's disease, celiac disease, bacterial growth, or a parasiteHeavy drinkingImmune system disorders, such as Graves' disease or lupusLong-term use of acid-reducing drugs

Symtoms of deficiency Weakness, tiredness, or light-headedness Rapid heartbeat and breathingPale skinSore tongueEasy bruising or bleeding, including bleeding gumsStomach upset and weight lossDiarrhea or constipation

functions of vitamin b 12 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 where they cannot make intrinsic factor. As a result, they have trouble absorbing vitamin B12 from all foods and dietary supplements.

Vitamin B 12


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