A person diagnosed with a B12 deficiency will need to take supplements. These are most often taken as capsules or via intramuscular injections. Although vitamin B12 does not directly cause weight loss, it is still an essential nutrient that is needed by the body. It is important to get a sufficient amount of it and doing so will ensure better health, all around.
Deficiencies can become a serious health threat. The body can normally stock up many years supply of vitamin B12, so it more often materializes when the body is unable to properly absorb vitamin B12 because of illness or old age. Incidentally, deficiencies can cause weight loss, among other symptoms. Extreme cases can even result in permanent nerve damage if left untreated.
