Figure 6. Forest plots of alterations of gut microbiota in the family level, including Bacteroidaceae (A), Clostridiaceae (B), Enterobacteriaceae (C), Lachnospiraceae (D), Rikenellaceae (E), and Ruminococcaceae (F). Abbreviations: AD: Alzheimer’s disease; MCI: mild cognitive impairments; CI: cognitive impairments.