Review: Impact of dietary compounds on cancer - related gut microbiota and microRNA — Muhammad Shahid Riaz Rajoka — Applied Microbiology and Biotechnology (microbiomedigest.com)
But now, we know that «specific dietary compounds found at high levels in cruciferous vegetables, such as broccoli, cauliflower, and cabbage are essential for sustaining intestinal immune function.» (nutritionfacts.org)
So, now we know «specific dietary compounds present in cruciferous vegetables act through the Ah [receptors] to promote intestinal immune function.» (nutritionfacts.org)