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

CNN: Vitamin deficiency anemia

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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Bush says the problem was that patients weren't getting enough of a B vitamin, and that no such safety issues have showed up in the current trial.

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

CNN: Vitamin deficiency anemia

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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