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Description
This is because the digestive system, stomach acids, and enzymes attack the molecular structure of B vitamins when consumed in the form of tablets or gels

Even after age differences were accounted for, the effect on memory remained

Radbill 2008

10.1038/364247a0 108 MauchF.DudlerR

8 and Supplementary Figs

Mol Endocrinol (2013) 27(3):52435.10.1210/me.2012-1330 266 BartkeASunLYLongoV
