Fig. 7
Heatmap visualizing the correlations between metabolites and the gut microbiota. The heatmap employs Spearman’s rank correlation coefficients to display the relationships, with color gradations indicating the correlation strength: red signifies a positive correlation, blue signifies a negative correlation, and the color saturation denotes the magnitude, with deeper hues indicating stronger correlations (P < 0.05). The sample size of each group was 8