Vegans, individuals who do not eat any animal products whatsoever, are also at risk of B12 deficiency because B12 is mainly found in meat and animal products that they do not eat. Careful diet planning is essential for vegans and vegetarians and supplements are often recommended to help make sure that the body is healthy.

Signs and symptoms of a vitamin deficiency can take as much as five years to appear. A pro-active course of action is the wisest decision; sublingual methylcobalamin B12, a form of b12 that is especially helpful for the nervous system, and often with folic acid, is a quick, easy and relatively inexpensive way to stave off any hint of deficiency.

In the past, the only way for the body to absorb vitamin B12 effectively was thought to be injections, which were none to pleasant and quite expensive. Fortunately, research has revealed that the body can and does absorb the vitamin when it is taken sublingually, or under the tongue.

These same studies showed that larger doses of B12 were needed to get the same degree of absorption as that taken by injection; however, the amount is still tiny and easily attained without a great worry of overdosing since large quantities of B12 have not shown it to become toxic to a human.

Vitamin B12 is extremely important. A body cannot function without it. It regulates the sleep-wake cycle, metabolizes carbohydrates and enables the body to use fat as energy. B12 is also important in the regulation of cholesterol. When B12 and folate work together homocysteine is metabolized and cholesterol levels drop. Homocysteine is an amino acid.