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High Folic Acid Intake Is Not a Risk Factor for Cognitive Decline: Misinterpretation of Results
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Morris et al1 found greater cognitive decline in older persons exposed to greater levels of folic acid intake and wondered about its mechanism. Another article of the same group and same database2 indicated less sensitivity to cognitive changes when participants had low baseline cognitive scores and fewer than 12 years of education. The authors should provide a sufficiently clear explanation of the standardized units of cognitive scores: its explicit formula would suffice. As outlined in Table 1,1 the reference group (the lowest quintile of folic acid intake) had a mean amount of fewer than 12 years of formal education and a mean baseline cognitive score that measured only 20% and 39% of the 2 highest quintiles of folic intake groups. It was not surprising that lowering an already low-scoring cognition in a nondemented group should be hardly detected because of its low sensitivity to slight cognitive changes; at the same . . . [Full Text of this Article]AUTHOR INFORMATION
Sander Fridman, MD
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