B) Heatmap showing correlations between different lipid species (x-axis) and the abundance of gut microbes (y-axis). Microbes were summarized at the levels of order (o_), genus (g_) or family (f_). *=p<0.05, **=p<0.01 Pvalues were calculated based on significance of regression (students test) and adjusted for multiple comparisons (FDR = 0.05). 