I assume this, but I don't know every chemical in this group. What is strange is that Kale does not seem like a very oily plant (in my opinion, could be wrong).

I assume this, but I don't know every chemical in this group. What is strange is that Kale does not seem like a very oily plant (in my opinion, could be wrong). This species store sugars as chill protection. The main question to ask here is if this chemicals are causing chronic inflammation and in that case if is related with the obesity epidemic. We know that people living in the upper course of the rivers and allegedly drink better quality water are less obese on average. A possible null hypothese to start could be: A body accumulating toxic substances in the fat cells, could react making more fat cells as a defense (to dilute the poison by cell)?. Are somebody checking if the areas with more chemicals in the water show a higher average of Body Mass Index?