Tony, I'll have to dig deeper into the wheat. My understanding was that the GMO wheat has different Amino Acids that cause depression and multiple other problems. Wheat may contribute to obesity but I can tell you for a fact, it doesn't effect my weight negatively.
Yes the Gliadin in wheat is said to bind to the opiate receptors and cause all kinds of problems for autistic kids, or people with depression, bi-polar or other chemical imbalances.
My suspicion is all of that is an unintended side effect from the modification designed to increase appetite, much like high fructose corn syrup does. The more you eat it, more you crave those processed wheat/sugar foods.
When I stopped drinking soda, I stopped being hungry all the time. When I stopped eating wheat, I stop craving sweets. My wife did the same and we both had these results.
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Regarding processed foods, yes I agree they're very bad. But I'm not ready to throw meat under the bus. The meat our ancestors ate was very healthy because it was natural. Now there are all sorts of toxins involved in factory farming. This is where we are getting the disease, not the meat itself. The same goes with dairy.
This is very dry but explains what Weston Price discovered many years ago...he studied the diets of isolated tribes and villages from many cultured and noted what they ate. The healthiest ones ate natural meat, dairy and fermented grains. The others had a processed western diet and suffered from rotten teeth and disease.