Power Thesaurus. 1969. pancreas thesaurus http://www.powerthesaurus.org/pancreas/synonyms (accessed April 14, 2017).
Having vitamin B12 deficiency means that your body does not have enough of this vitamin. You need B12 to make red blood cells, which carry oxygen through your body. Not having enough B12 can lead to anemia, which means your body does not have enough red blood cells to do the job. This can make you feel weak and tired.Vitamin B12 deficiency can cause damage to your nerves and can affect memory and thinking.his can happen if: 1  You have pernicious anemia. 2  In this anemia, your body destroys the cells in your stomach that help you absorb vitamin B12. 3  You have had surgery to remove part of the stomach or the last part of your small intestine, called the ileum.
A Vital Nutrient. B12 is an essential vitamin with roles throughout the body. It is needed for the development and maintenance of a healthy nervous system, the production of DNA and formation of red blood cells. A severe B12 deficiency results in anemia, which can be picked up by an ordinary blood test.But the less dramatic symptoms of a B12 deficiency may include muscle weakness, fatigue, shakiness, unsteady gait, incontinence, low blood pressure, depression and other mood disorders, and cognitive problems like poor memory.ynthetic B12, found in supplements and fortified foods, does not depend on stomach acid to be absorbed. But whether natural or synthetic, only some of the B12 consumed gets into the body. Treatment to correct a B12 deficiency typically involves much larger doses than the body actually requires.