Vitamin B-12 is vital to the normal function of the brain and the nervous system. It is also involved in the formation of red blood cells and helps to create and regulate DNA.
The human body produces millions of red blood cells every minute. These cells cannot multiply properly without vitamin B-12. Red blood cell levels decline if vitamin B-12 levels are too low. Anemia can result causing fatigue and neurological difficulties.
In the United States, up to 15% of the population may have a Vitamin B-12 deficiency. People who do not eat meat, such as vegans, especially can benefit from vitamin B-12 in supplement form.
Good dietary sources of vitamin B-12 include beef, pork, chicken, lamb, fish, dairy products, eggs and cereals fortified with vitamin B-12.
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