If you look at the prevalence of IBD amongst cultures, as mentioned earlier there is a lower incidence amongst Asia, Africa and while not mentioned South America. One of the suspected reasons behind this is industrial farming practices of the west. High intensity farming produces a meat that is lower in Omega 3 and much higher in Omega 6. This has been proven. Omega 6 increases inflammation in the body when we consume too much of it. Beef which North America, Europe and Australia eats in vast quantities, is incredibly high in omega 6. Japan traditionally had a diet heavy in protein derived from fish, the past 25-30 years have seen beef consumption sky rocket in Japan there is correlation between this consumption and the rise in IBD cases.
South America, where the incidence has always been traditionally low, also eat large quantities of meat, beef in particular, but is raising livestock using traditional techniques and feeding cows a grass based diet. Which produces and animal with more omega 3 than the grain and corn fed animals that are produced by N. America, et al.
This combined combined with the levels of processed food, genetic susceptibility based upon race and theories regarding western society being far too clean (theories based upon parasites strengthening the immune system), all of these explain the increasing amount of IBD diagnoses over the past 40 years.
The world as a whole has hit "peak wheat", there is quite frankly no way we can produce more yield than we already are, we are faced with eating less meat and increasing plant consumption to a level previous to industrial farming (which will not happen) or seeking ways to produce more crops.
I've trusted and let science keep me alive, clothe me, medicate me etc etc, I'm not going to tell it to scram when it starts going near my soy beans.