Back in the 70's  ...doing a little GENE splicing trick in the lab
Horticultural Scientists created a new strain of WHEAT that contained
Gliadin protein  that binds to your Opiate receptors basically stimulating your appetite
artificially (similar to cannabis)  from eating modern wheat products.
You cannot blame the Farmer because they now had a plant that could produce
ten times the yield   and the reason they grow wheat is for the MONEY  not
to promote health.
Now combine that Gliadin protein with all the other APPETITE stimulants....
and HUSTON we have a problem ......i can't fit into my space suit...-LOL  
Modern wheat a "perfect, chronic poison," doctor says - CBS News