Does Vitamin B12 Really Work?
Vitamin B12 is claimed to work for a wide variety of conditions, often with little scientific evidence to back up such claims. This article will address the effectiveness of vitamin B12 for several uses.
Does It Work for a Vitamin B12 Deficiency?
As you might guess, taking vitamin B12
is effective for treating a deficiency. It is also effective for preventing a deficiency in people at high risk for such problems. Although it was once thought that injections were the only way to treat vitamin B12
deficiencies due to low or absent intrinsic factor, it is now known that oral forms can be just as effective as injectable forms, although much higher doses are required. Small amounts of vitamin B12
can be absorbed after oral consumption, even without any intrinsic factor. Many healthcare providers choose to initially treat with injections to build up the stores of vitamin B12
in the body, then follow with oral supplementation.
Vitamin B12 also works for the various problems related to a deficiency, such as pernicious anemia.