A number of studies suggest that elevated levels of the amino acid homocysteine are a risk factor for developing Alzheimer's disease. Given the large group of baby boomers moving into later life, this topic is an important one. So, it is interesting that a new study in the New England Journal of Medicine found that giving the B vitamins that can lower homocysteine levels in the blood did not change cognitive abilities in initially healthy elderly over a two-year period.
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