A separate meta-analysis that pooled results of trials in older adults with mild cognitive impairment found B-vitamin supplementation (6 to 24 months, depending on the trial) had no benefits on various cognitive parameters, including executive function, information processing speed, and episodic memory (90)
doi: 10.1007/s10072-006-0582-2 14
2A) was non-significant in the overall test (Wilks lambda = 0.474, p = 0.960, p = 0.526) or the within-subject-effects analysis (F = 0.409, p = 0.969, p = 0.055)
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J Clin Oncol 26 : 45634571 Vasaitis T et al