Fig. 2

Reduced SCFA-producing gut bacteria in HAND. The Kruskal-Wallis rank sum test was used to analyze the abundance of key gut microbiota at the genus level (A) and species level (B). The x-axis represents the abundance of the microbiota. Statistical significance was denoted as *p < 0.05, **p < 0.01, ***p < 0.001, and ****p < 0.0001