According to the study published in the journal Nature, the AHR aryl hydrocarbon receptor is a protein found at barrier sites like the gut and the lung. Natural molecules in cruciferous vegetables such as kale, cauliflower, broccoli, or cabbage are dietary “ligands” for AHR, meaning that once eaten, they activate AHR to target several genes. Some of the genes targeted switch off the AHR system, allowing it to self-regulate. ....