Low levels can be treated with drugs, particularly versions of the B-vitamin niacin including Niaspan, from Abbott Laboratories.

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Cordaptive's effects on cholesterol come from niacin, a B-vitamin that has been used to treat heart patients for four decades.

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Recent research has suggested that vitamin C, vitamin B-6 and vitamin B-12 don't deliver all of their purported health benefits.

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Vitamin B-12 deficiency can result from a diet lacking in vitamin B-12, which is found mainly in meat, eggs and milk.

CNN: Vitamin deficiency anemia

Vitamin B-12 deficiency anemia can also occur if your small intestine can't absorb vitamin B-12.

CNN: Vitamin deficiency anemia

B-complex vitamin found in fish, meat, soyabeans, eggs and other foods, which is changed into trimethylamine and so accumulates in people who cannot deodorise the molecule.

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The Federal Reserve's decision on September 29th to lower its main short-term interest rate by a quarter point is simply an injection of Vitamin B-12, meant to give a healthy economy a bit more vigour.

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Whether or not Clemens can demonstrate a vitamin B-12 deficiency, he is going to have to contend with questions about why chose injections of a vitamin that is found naturally in meat, fish and dairy products or in commercially-produced and readily-available pill form.

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And it has Vitamin B-12 -- you need this to keep your nerve cells healthy.

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Vitamin B-12 is often used in weight loss programs to boost energy and metabolism.

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Vitamin B-12 deficiency anemia caused by a lack of intrinsic factor is called pernicious anemia.

CNN: Vitamin deficiency anemia

Without intrinsic factor, vitamin B-12 can't be absorbed and leaves your body as waste.

CNN: Vitamin deficiency anemia

However, a vitamin B-12 deficiency is most often due to a lack of a substance called intrinsic factor.

CNN: Vitamin deficiency anemia

But the scientific evidence that demonstrates such effects has been shown in individuals who have a vitamin B-12 deficiency.

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Vitamin B-12 deficiency can also be caused by a tapeworm ingested from contaminated fish, because the tapeworm saps nutrients from your body.

CNN: Vitamin deficiency anemia

People who eat no animal foods run the risk of nutritional deficiencies such as a lack of vitamin B-12, iron and zinc and the powerful Omega-3 fatty acids found in fish, she said.

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Vitamin B-12 deficiency anemia (pernicious anemia).

CNN: Vitamin deficiency anemia

In January 2000 the FDA slapped him with a warning letter for overhyping the vitamin B-12 content in Spirulina Spirals and wrongly promoting Fruity Booty as a "mostly fruit" product when the only fruit to be found in it was a powdered dust of flavorings.

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So a good multivitamin or a vitamin C or B-complex could help.

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If that doesn't work--and it won't for many people--try an ancient HDL-raiser, the B vitamin niacin, if you can live with its annoying side effect (hot flashes).

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Vitamin D is incorporated in the body when skin is exposed to sunlight of a certain wavelength but in the UK, during winter months, UV-B radiation can be insufficient to properly support vitamin D synthesis in the body.

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In America and the UK there are anti-drug programmes such as Narcinon, using a regime of exercise, saunas and vitamin B the church claims it has a 75% success rate.

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