I don't necessarily buy the evolution argument, the extent to which some human adults are lactose tolerant is a very recent evolutionary development which coincides approximately with the development or agriculture, but the conclusion is nevertheless sound. Stop eating bread, or at least so much of it.
People binge on bread these days, it is insane. It is no wonder that any amount of fructose in bread can be alarming when you look at how much is consumed.
I'm interested in counterpoints to the evolution argument. Not to prove myself right; just the opposite. I enjoy proving myself wrong, since it means I've probably learned something.
The logic is this: evolution is supreme. It's why our eyes see brightness logarithmically rather than linearly. In fact, every sensory input (sound, etc) except pain is logarithmic. Pain is linear. We see green more intensely than other colors because we've spent a long time hunting for prey that hides in green grass and green tree leaves. Evolution determines the very nature of our thinking patterns. It's why some people count "out loud" to themselves in their heads, whereas others count by "seeing" the numbers in their heads. Etc. There are at least thousands of examples of how evolution has forged our state of being.
Evolution determines so much of our nature that in comparison we have very little control over aspects of ourselves. One thing we do control is input to our bodies. We can control whether we watch TV, and we can control which foods we eat. The question here is, which foods should we eat?
One view is that if we eat foods we've been eating for the past million years, then we probably don't have to worry about which foods we eat. The answer is simply, "Eat any which haven't been designed by humans in the past 10,000 years."
In the USA, foods are required by law to list every ingredient. This is a huge advantage if one were to read them. If I see corn starch, soy, sugar (if it's added as an ingredient, then that means the food is artificial), etc, then I don't buy it.
It's incredible how many foods are excluded by this method. You almost can't find ham that hasn't had sugar added. I pretty much have to buy summer sausage, pork steaks, and chicken. No more bologna.
I'm afraid I don't have very much insight into the matter. All I know is that it seems apparent that evolution can change human dietary constraints in surprisingly short periods of time, particularly over the short course of 10,000 years.
Paleo diets still seem like a good idea to me, I just remain unconvinced that this is clearly due to evolution. Other types of restricted diets seem to stack up well; the diet seems sound but the justifications seem a bit pseudo-sciency.
People binge on bread these days, it is insane. It is no wonder that any amount of fructose in bread can be alarming when you look at how much is consumed.