“…arabinoxylan [corn, wheat], beta glucan [oat], cellulose [corn, alfalfa, wheat, beet], hemicellulose [corn, alfalfa, wheat, beet], pectin [beet] [55][56][57][58]. These different dietary fibers have been shown to serve as nutrient sources for a variety of gut microbial taxa, including the genus Bifidobacterium (cellulose, pectin, oat, arabinoxylan) [59][60][61][62][63], the genus Parasutterella (pectin) [63], the phylum Actinobacteria (pectin) [63], and the genera Bacteroides-Prevotella (oat, arabinoxylan) [59], among others. The present study was not designed to pinpoint the effects of specific dietary fibers (or lack thereof) on cognitive function or the microbiome, but this is an important area of future work.…”