Likewise, a 2006 report that appeared in an American Heart Association journal showed that a drink or two a day might be linked to better cognitive function in women.

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Patients in a phase III trial for tarenflurbil, a drug that showed promise in an earlier phase II trial, did not experience improvement in cognition or daily function compared with those who received a placebo, according to a recent study in the Journal of the American Medical Association.

CNN: Nutritional drink, imaging show promise for Alzheimer's