Fig. 1

Comparison of intestinal flora diversity index of CRC patients in Overweight and Normal weight groups. A Comparison of α-diversity index of intestinal flora between Overweight group and Normal weight group of CRC patient group. B Comparison of β-diversity index of intestinal flora in Overweight group and Normal weight group of CRC patient group. The horizontal coordinates indicate the group, the vertical coordinates indicate the value of community diversity index of the samples in this group, and the color indicates the group. C PLS-DA analysis of intestinal flora of CRC patients in Overweight group and Normal weight group. Dots represent each sample, colors represent groups, scales on the horizontal and vertical axes represent relative distances to each sample, and X-variables 1 and 2 represent factors that influence changes in gut flora composition in CRC patients in Overweight group and Normal weight group, respectively