The elderly, vegetarians and people with some specific illnesses can suffer from a Vitamin B12 deficiency, and today many foods that form to make the average diet also have too low levels. Problems that can arise through having a vitamin B12 intake that is not high enough include feeling weak, fatigued, paranoid or mentally impaired as well as damaged nerves, pernicious anemia, delirium and CFS (Chronic Fatigue Syndrome).
Certain studies have indicated that if your vitamin B12 levels are too low your homocysteine levels will be elevated. Homocysteine is an amino acid that is thought to be responsible for heart diseases, CFS and fibromyalgia. Alzheimer’s and depression have been linked to high levels of the amino acid also. B12 is largely responsible for preventing these homocysteines from getting out of hand and causing problems.
Anywhere up to a quarter of the American population over eighty could possibly have this deficiency. This is the belief of The Jack Miller Center for Peripheral Neuropathy at the University of Chicago, who also teaches their students that those who have strict vegetarian diets are commonly lacking in the vitamin also. Although...