Postprandial changes in AhR expression (A) and in circulating concentrations of IAAld (B) (Pimentel et al.,submitted) following dairy intake. Postprandial changes of AhR correlate with IAAld after acidified milk intake (rho = -0.43, p = 0.05) but not after yoghurt intake (rho = 0.28, p = 0.20) (C). Changes in AhR expression at 2 h postprandially correlate with changes in insulin at 2 h after yoghurt intake (rho = 0.75, p = 0.05) with a similar trend after acidified milk intake (rho = 0.61, p = 0.14) (D). Acidified milk, blue and yoghurt, red. Symbols represent the time of sampling: 2 h (circles), 4 h (triangles) and 6 h (squares). Abbreviations: AhR, aryl hydrocarbon receptor; IAAld, indole acetaldehyde.