FIGURE 2.

BMI differences in the gut microbiota at the phylum and genus levels were influenced by gender. Bacterial phyla and genera demonstrated significantly different log₂ abundances across the four BMI groups in (A) the overall cohort, (B) females and (C) males. Lower and upper limits of the boxes represent 25th and 75th percentiles, respectively. Whiskers represent 1.5^∗ inter-quartile range. P-value ranges are: ^∗P < 0.05, ^∗∗P < 0.01, and ^∗∗∗P < 0.001. UW, underweight; N, normal; OW, overweight; OB, obese.