Dangers of B12 Deficiency
Cognitive Impairment
In older adults, a lack of B12 is often linked to cognitive issues and dementia. This deficiency is also associated with other neurodegenerative diseases like multiple sclerosis and Parkinson’s disease.
Psychosis
Low B12 levels can sometimes lead to symptoms like depression, hallucinations, and seizures. When these issues are due to a nutritional deficiency, taking B12 might help. For instance, a middle-aged man with obsessive-compulsive disorder and low B12 levels found relief by using methylcobalamin, a bioactive form of vitamin B12.
Melancholic Depression
People with melancholic depression, which is caused by physical rather than psychological factors, often show an inverse relationship between their B12 levels and the severity of their depression.
Stroke
Some studies suggest that a B12 deficiency might increase the risk of stroke. One case involved an older man who had recurring strokes and a reduction in blood cells due to an inability to absorb B12 from his intestines. This led to high levels of homocysteine in his blood, which is a likely contributor to strokes and blood clots.
Alzheimer’s Disease
While research is ongoing into the causes of Alzheimer’s disease, one study found that a combination of folic acid, B6, and B12 significantly reduced cerebral atrophy.
Cardiovascular Disease
Without enough B12, the body can’t convert homocysteine to methionine, leading to a build-up of homocysteine. High levels of homocysteine are linked to atherosclerosis and an increased risk of cardiovascular problems.
Pernicious Anemia
This condition prevents the body from producing enough red blood cells and can cause fever. Researchers have found that B12 injections can alleviate the symptoms of pernicious anemia.
Make Sure You Get Your B12
The importance of vitamin B12 for the human body cannot be overstated. Long-term B12 deficiency can lead to nerve damage, memory loss, and other cognitive issues. In some cases, it is also linked to mania and various forms of temporary psychosis. If you don’t get enough B12 from your diet, taking a B12 supplement is a reliable way to meet your nutritional needs.
