Vitamin B12 is one of the water-soluble vitamins. The body requires it for the formation of red blood cells, for neurological functions and for DNA synthesis. B12 can be found in many foods including meats, fish, poultry and dairy products. However, there are some people who have difficulty absorbing B12 from foods. This can lead to a vitamin B12 deficiency, and a supplement will most likely be prescribed by your doctor.
B12 deficiency
B-2 deficiency is extremely rare. The body has the ability to store several years worth of B12. However, there are some people who are unable to absorb the vitamin or unable to utilize it. Elderly people and vegetarians are the most at risk for a deficiency. Between 1.5 and 15 percent of the population is diagnosed with a vitamin B12 deficiency.
Symptoms
A vitamin B12 deficiency can cause many symptoms. The most common symptoms include fatigue, weakness, loss of appetite, weight loss, constipation and anemia. Less common symptoms can be tingling in the upper and lower extremities, confusion, poor memory and loss of balance. If any of these symptoms occur, consult your doctor. A simple blood test will reveal if you have a vitamin B12 deficiency.
B12 Shots
B12 injections are administered intramuscularly, or directly into the muscle. This method is often chosen by healthcare professionals when there is a severe deficiency or problems with absorption. B12 injections are usually started with frequent loading shots, followed by monthly maintenance shots. Intramuscular B12 injections must be performed by a healthcare professional and can be painful at the injection site. Most insurances will cover B12 injections if medically necessary.
B12 vitamins
Vitamin B12 can be found over the counter in doses up to 5,000 mcg. It can be administered by melting under your tongue or as a tablet. Bioavailability is the same when compared to injections; however, abortion is limited due to a protein found in the stomach. The average, healthy person will only absorb 10 mcg out of every 500 mcg tablet. However, most people tend to chose the oral supplement to avoid regular injections.
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